DJI Agras T50 OEM M1&M2 Arm ESC Composite Cable (YC.XC.DD000573)

M1&M2 Arm ESC Composite Cable | ESC-to-Motor Power Harness | Propulsion Arm Wiring | Electrical Connection Hardware | Field-Ready Replacement Component | DJI Material Number YC.XC.DD000573

DJI Material Number YC.XC.DD000573 — this is the official DJI part number for this exact component. Match it to your parts diagram or the label on the original part to confirm fitment; factory labels may carry a revision suffix, which is the same part.

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🇺🇸 U.S.A. FIRST

Ares Acres LLC is a U.S.-based authorized DJI Agras reseller supporting American agricultural drone operators with genuine DJI Agras OEM replacement parts, accessories, and field-ready inventory.

FREE & FAST Shipping is included for all U.S. customers.

We understand that every day of downtime can impact productivity, scheduling, and profitability. That's why we focus on providing fast fulfillment, responsive customer support, and reliable access to the parts operators need most.

Ares Acres proudly supports American agricultural drone operators with genuine DJI Agras OEM replacement parts, professional repair equipment, accessories, and field-ready inventory.

Between the ESC and the motors on the M1 and M2 arms runs one cable carrying everything: drive power, control signal, the entire electrical lifeline of two propulsion arms. When that harness is sound, nobody thinks about it. When it degrades, two motors feel it at once.

Cable wear is the propulsion fault crews find last — intermittent, vibration-dependent, invisible at the bench — while motors and ESCs get swapped chasing symptoms the wiring is causing.

That is why Ares Acres keeps hard-to-find propulsion wiring in stock and shipped fast to the U.S.A., helping operators fix arm electrical faults at the harness, minimize downtime, and keep their aircraft spraying when every acre counts.

For professional farmers, aerial applicators, and commercial drone operators, solid arm wiring is solid propulsion.

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✅ DJI Agras T50 Compatibility Guarantee

• 🇺🇸 USA Compatibility Guarantee
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• 📦 Same Day Shipping & Tracking

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📦 Package Includes

• 1 × M1&M2 Arm ESC Composite Cable
• Premium propulsion wiring component
• Direct-fit replacement harness
• Protective packaging

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🔧 Component Overview

The DJI Agras T50 Original M1&M2 Arm ESC Composite Cable is the ESC-to-motor electrical harness for the M1 and M2 arms of the DJI Agras T50 agricultural drone.

The composite cable carries stable, efficient electrical connection between the ESC and the motors — the power and signal path both arms' propulsion depends on for smooth flight performance. Built from high-quality materials for harsh agricultural duty with a direct-fit design, a fresh harness restores factory connection integrity the moment a fatigued one comes out.

Commercial agricultural drones operate in demanding environments every day, including:

• Crop spraying
• Liquid fertilizer application
• Heavy payload operations
• Long-duration flight missions
• Orchard operations
• Vineyard spraying
• Precision agriculture missions
• Daily commercial deployments
• Fleet operations
• High-acreage contract work

Throughout these operations, arm ESC cables are routinely exposed to:

• High-current motor loads every flight
• Constant airframe and arm vibration
• Flex cycling at arm movement points
• Heat from ESC and motor operation
• Chemical mist and spray residue
• Moisture and washdown exposure
• UV exposure across long seasons
• Connector stress at both ends
• Transport handling and folding cycles
• Long commercial operating hours

Over time, this duty fatigues conductors, degrades insulation, and wears connectors — and a tired harness means two motors running on a connection that can't be trusted.

The M1&M2 Arm ESC Composite Cable helps maintain:

• Stable ESC-to-motor electrical connection
• Reliable power delivery to both arms' motors
• Clean signal integrity for motor control
• Smooth, responsive propulsion behavior
• Durable connections under agricultural duty
• Consistent flight stability
• Increased fleet readiness
• Maximum aircraft uptime
• Reliable commercial operation

For operators flying two motors on one harness, connection integrity is non-negotiable.

Start the diagnosis by asking how many motor positions are complaining. This harness is the shared electrical path for both motor positions on its arm, so a fault that takes out or degrades both of them together points at the cable and its connectors long before it points at two motors failing on the same day. One position misbehaving while the other on the same arm stays clean is a motor or controller story. Both moving together, or a fault that alternates between them, is a wiring story.

Do not let a continuity beep close the case. A stranded power conductor that has lost most of its strands to vibration still reads as connected on a handheld meter, because the meter pushes almost no current through it. The honest test is voltage drop under load: measure end to end across the same conductor while the motor is actually pulling current, then take the identical measurement on a healthy arm and compare. A conductor that has been quietly breaking will show a clearly larger drop than its sibling.

Reproduce the fault with your hands before you buy anything. With the propellers off and the aircraft on a stand, power up, watch the controller for the arm fault, and work slowly along the cable run, flexing it in short sections and pressing each connector home. Then fold and unfold the arm through its full arc. A fault that appears at one point in the fold, or under pressure at one spot, is a broken strand at a flex point, and you have just found the exact section that failed.

Split the complaint into power and signal before deciding what failed inside the bundle. If the aircraft sees both motors, reports them present, and they stutter or cut only under load, the fault is on the power side. If the arm goes quiet in telemetry, a motor is reported missing, or the controller cannot talk to that position at all while nothing looks burnt, suspect the signal conductors or their pins. The remedy is the same harness either way, but knowing which half failed tells you how hard the aircraft has been working.

Look where the cable is worked, not where it is easy to see. The wear points are the hinge area where the harness follows the arm through every fold, any place a tie or clamp squeezes the jacket, and the last few inches before each connector where the bundle is stiffest. Polished shine on the jacket, a flat spot, a witness mark on the structure beside it, or a tie that has cut into the insulation all mean the cable has been rubbing, and rubbing on a power harness ends one way.

A fault that only shows up wet is telling you the jacket has been breached. If the arm misbehaves after a washdown, on a heavy dew morning, or on the first flight after the aircraft has sat outside overnight, and then clears as the day dries out, moisture is bridging a damaged conductor to structure or to its neighbor. Dry the arm thoroughly and see if the fault leaves with the water. That pattern is a harness, not a motor, and it gets worse every time the aircraft is washed.

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⚙️ Functional Purpose

The M1&M2 Arm ESC Composite Cable is designed to connect the ESC to the motors on the M1 and M2 arms of the DJI Agras T50.

The component helps:

• Carry drive power from ESC to motors
• Maintain clean control signal to both arms
• Support smooth, stable motor operation
• Hold connection integrity under vibration
• Resist heat, chemicals, and weather exposure
• Support responsive flight control
• Replace fatigued, damaged, or intermittent harnesses
• Restore factory propulsion wiring integrity
• Install directly on the M1 and M2 arms
• Integrate exactly with the T50 architecture
• Support preventative maintenance
• Increase fleet readiness
• Keep propulsion wiring field-ready

Every amp both motors draw crosses this harness — and the propulsion is only as reliable as the wiring feeding it.

A sound composite cable keeps both arms' motors fed clean power through season after season of commercial duty.

A worn or damaged arm cable may contribute to:

• Intermittent motor faults on M1 or M2
• ESC communication errors
• Vibration-dependent electrical gremlins
• Motor performance inconsistency
• Heat buildup at damaged conductors
• Reduced flight stability
• Interrupted spraying missions
• Unexpected downtime
• Reduced fleet reliability

Replacing a fatigued harness restores the electrical integrity both propulsion arms were engineered around.

Before the arm is opened, pull the batteries and give the aircraft a few minutes. A heavy lift propulsion bus holds charge after the packs come out, and this harness lands on terminals that stay live longer than most people expect. Then photograph the arm exactly as it sits, from more than one angle, before anything is disturbed. Routing, tie positions, and which way each connector faces are all easier to copy from a picture than to remember an hour later.

Label the connections before the first one is unplugged. Motor direction depends on how the phase conductors land, and an arm that has been reassembled with two phases swapped will look perfectly normal until the propellers are on and spinning the wrong way. Masking tape and a marker on each lead, matched to a note or the photograph, costs a minute. Discovering the mistake at spin up with blades fitted costs a great deal more than that.

Support the arm while you work so it is not hanging on its own wiring. Release connectors by the body, never by pulling on the cable, and never lever a screwdriver against the controller board or the motor housing to pop a stubborn plug. These connectors are keyed and latched; if one does not come apart with steady pull, find the latch rather than adding force. A pin pulled back inside a housing is a fault you will chase later and never see.

Feed the new harness along exactly the same path the old one used and reuse every original anchor point. The service loop at the hinge is deliberate: the cable has to follow the arm through its full fold without going tight at one end of the travel or bunching against a hard edge at the other. A harness routed on the wrong side of an anchor, or dropped one clip lower than it should sit, will chafe through in a season even though it looked fine on the bench.

Seat each connector fully and prove it. Push until the latch engages, then pull gently on the housing to confirm it is captive. Do not close the arm on a plug that is only most of the way home, because a partly seated contact carries current on a fraction of its surface, heats, and then fails exactly like the cable you just removed. Snug the ties enough to control the harness and no more; a tie cinched down into the jacket becomes the next wear point.

Before the covers go back on, fold and unfold the arm through its whole range and watch the harness the entire time. Nothing should go tight, nothing should touch an edge, and nothing should be trapped as the arm closes. Then power up with the propellers off, confirm the aircraft sees both motor positions on that arm and reports no controller error, and only then fit blades for a short hover. Check the ties and connectors again after the first working day, because a fresh harness settles.

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⚠️ Common Replacement Indicators

Replacement may be recommended when operators observe:

• Intermittent M1 or M2 motor faults
• ESC errors that come and go
• Cracked or degraded insulation
• Heat discoloration on the cable
• Burnt or stressed connectors
• Corroded terminals
• Chafed jacket at contact points
• Faults that follow vibration or arm movement
• Chemical-attacked wiring
• High-hour propulsion wiring
• Maintenance inspection findings
• Post-incident arm repairs
• Fleet refurbishment projects
• Preventative pre-season replacement

Common causes of cable wear include vibration fatiguing conductors flight after flight, flex cycling breaking strands at stress points, heat aging the insulation, chemical mist attacking the jacket, and connector wear from service cycles — harness faults are intermittent before they're permanent, so experienced crews inspect arm wiring at every propulsion service and replace at the first chafe, discoloration, or vibration-dependent fault.

For commercial operators, a fresh harness is almost always cheaper than the motors and ESCs replaced chasing a wiring fault.

Both motor positions on one arm dropping out, derating, or throwing errors at the same moment almost never means two motors failed on the same flight. It means the thing they share failed, and what they share is this composite cable, the connectors at each end of it, and the controller feeding it. Work the shared path first and you will usually be done before lunch. Work the motors first and you will replace two good ones and still have the fault.

A fault that only appears after the aircraft has been folded for transport and set back up points at a broken conductor at a flex point. Every fold cycle works the same short section of the bundle, and stranded copper that has been bending in the same place since the aircraft was new eventually gives up a few strands at a time. The tell is that the aircraft flew fine yesterday, was trailered, and now reports an arm fault that comes and goes as the arm is moved.

A warm cable or a warm connector after a hard flight is a resistance problem announcing itself. Current squared times resistance has to go somewhere, and on a tired harness it goes into heat at whichever joint or strand bundle has degraded. Feel the connector shells at both ends right after a loaded flight and compare them against the same points on another arm. The one that is noticeably warmer is where the harness is failing, whether or not anything looks wrong from outside.

A fault that only shows up with a full tank, and never on a light test hop, is a conductor that has lost cross section. What is left of the strands can carry a hover current without complaint and cannot carry a working load. If the aircraft is clean on a bench spin and drops an arm on the third pass of a heavy field, stop testing it empty. Load is the condition that reveals this failure, and the harness is the first place to look for it.

While the arm is open, inspect the controller side of the connection as carefully as the cable. Heat that built up at a bad joint does not stay in the plug; it cooks the mating header on the board, discolors the plastic, and softens the retention that holds the pins straight. A new harness pushed into a heat damaged socket will fail again in the same place. If the board side is browned, scorched, or feels loose on the plug, the controller needs attention too.

Check the motor end of the story before you close up. A motor that has been running on a high resistance phase has been running unbalanced, which shows up as extra heat in the windings and extra work for the bearings. Spin each motor on that arm by hand with the leads disconnected and feel for grit, drag, or notchiness. Finding a rough bearing now, while the arm is already apart, is far cheaper than finding it two weeks later with the aircraft loaded.

Replace or at least inspect anything the harness passes through while you have access. Grommets and pass throughs harden with heat, sunlight, and chemical exposure, and a grommet that has gone brittle stops protecting the cable and starts cutting it. The same goes for clips and ties that have been in the sun for a season. A new cable threaded through the same hardened edge that destroyed the last one is a repair with a countdown running on it.

Dried spray residue on and around the harness is a finding, not a cosmetic detail. Concentrated product left to dry on a jacket attacks the plasticizers that keep it flexible, and a jacket that has gone stiff and chalky cracks at the first hard fold. Residue packed into a connector shell wicks moisture and starts corrosion on the pins. If the arm interior is crusted, clean it out properly while it is open and treat that harness as a limited life item from then on.

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📐 Specifications

DJI Material Number (SKU): YC.XC.DD000573

Component Type: ESC composite cable / propulsion arm electrical harness

Compatibility:

• DJI Agras T50

Package Quantity: 1 Cable

Installation Area: M1 and M2 propulsion arms

Function: Connects the ESC to the M1 and M2 arm motors with stable power and signal

Design: Composite power and signal harness, direct-fit

Construction: High-quality, weather-resistant materials

Mounting Type: Direct-fit replacement harness

Application: Agricultural drone propulsion wiring maintenance

Shared Path: Carries drive power and controller signal for both motor positions on its arm in one bundle

Position Specific: Each arm position on the aircraft has its own harness; a visually identical cable from another arm is not a substitute

Conductor Gauge, Length, and Connector Ratings: Not published by DJI for this assembly. Match the removed harness for overall length, connector style, keying, and pin count rather than working from an assumed figure

Serviceability: Replaced as a complete assembly; individual conductors, pins, and connector shells are not serviced separately

Handling: Store coiled loosely with connector protection in place. Do not fold sharply, kink, or crush the bundle

Verification Before Installation: Read the material number on the label of the removed part, then compare the new harness against it on the bench before the arm is closed

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🧰 Fitment Verification Before You Order

This listing is DJI material number YC.XC.DD000573. That number, not the description, is what makes a part match. Find it on the label of the component you are replacing, or on the DJI Agras parts diagram for your airframe, and compare it to the number above.

Revision suffixes are still the same part. DJI labels sometimes carry a trailing revision such as .01, .02, or .F. Those denote a production revision, not a different component. Match the base number and disregard the suffix.

Visually similar is not the same. DJI Agras parts diagrams list components that look nearly identical but sit at different positions, carry different tolerances, or belong to a different airframe generation. Ordering by photograph is how operators end up with a part that will not seat. Order by number.

Verified fitment for this listing: DJI Agras T50. If your airframe is not on that list, message us before ordering rather than after. We would rather answer a question than process a return, and so would you.

Not sure? Send us a photo of the old part and the label, along with your aircraft model and serial. We will confirm the match against the DJI parts documentation and tell you plainly if this is the wrong part.

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🛠️ Installation & Handling Notes

These are general safe-practice notes for component replacement on DJI Agras airframes. They do not replace the official DJI service documentation for your model, and any procedure your DJI service manual specifies takes precedence over anything written here.

Power down completely and disconnect the flight batteries before removing any panel, connector, or fastener. Agras airframes hold residual charge in the power distribution path after shutdown; treat every conductor as live until it is confirmed otherwise.

Photograph the assembly before you disturb it. Cable routing, connector orientation, and fastener lengths on Agras airframes are not interchangeable, and the M1&M2 Arm ESC Composite Cable is easier to fit correctly when you can see how the original sat.

Torque to DJI specification. Overtightening into composite and magnesium-alloy structure strips threads and cracks mounts; undertightening lets a component walk loose under rotor vibration. Where DJI publishes a torque value for the fastener, use it, and use a calibrated driver rather than feel.

Observe ESD precautions. Ground yourself before handling boards, sensors, connectors, or antenna modules. Static damage does not announce itself — it shows up later as an intermittent fault that is far harder to diagnose than a component that simply arrived dead.

Seat every connector fully and restore the original strain relief. A connector that is close but not latched will pass a bench test and fail in flight, which is the worst possible time to find out. Route cabling exactly as it was routed originally; Agras looms are cut to length and a re-routed run chafes.

Test before you spray. Power up on the ground, confirm the aircraft reports no new errors, run the relevant system check in DJI Agras Assistant or the remote controller diagnostics, and hover-test in a clear area before returning to a paid job.

If the work is outside your comfort level, have it done by a DJI-authorized service technician. The part cost is small next to the airframe.

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🚜 Necessary For

This component is ideal for:

• DJI Agras T50 operators
• Farmers operating spray drones
• Commercial spraying contractors
• Agricultural aviation companies
• Fleet maintenance managers
• Agricultural drone technicians
• DJI Agras service providers
• Drone repair facilities
• Commercial drone fleets
• Precision agriculture businesses
• Propulsion rebuild projects
• Preventative maintenance programs
• Daily commercial operations
• Emergency repair inventory
• Professional agricultural drone operators

Especially valuable during:

• Spring spraying season
• Summer application windows
• Arm and propulsion service work
• Post-incident repairs
• Multi-aircraft fleet maintenance
• Seasonal rebuilds
• Emergency repairs
• High-hour commercial operations

When two motors ride on one harness, keeping that harness fresh keeps operations moving.

Fit a new harness whenever the arm is open for other reasons on a high hour aircraft. The labor to reach this cable is most of the job, and the part is a small fraction of what an arm rebuild costs. If the aircraft is already apart for a motor, a controller, or an arm shell after an incident, putting an aged harness back into a freshly rebuilt arm is the decision people regret. Anything that has been through a hard landing gets replaced rather than inspected.

Treat any incident that bent, pinched, or twisted an arm as a harness event. The cable is captive inside a structure that just deformed, so it can be crushed, stretched, or cut in a place the outside of the aircraft gives no hint about. Damage inside a bundle does not have to break the jacket to break strands. If the arm took a hit hard enough to need attention, the harness inside it took the same hit and should not be trusted back into service.

Handle the new part like the flexible assembly it is. Keep it in its packaging until the arm is open and ready for it, leave the connector protection in place so the pins stay clean, and uncoil it rather than dragging it out of a tight loop. Do not use it as a pull line for anything, do not hang tools on it while routing, and in cold weather let it warm up before bending it, because a chilled jacket takes a set and can crack at the fold.

Wash habits shorten harness life faster than flight hours do. A pressure washer aimed into an arm root drives water and chemical past seals and straight into connector shells, and residue that gets rinsed in rather than off then dries inside the bundle. Wash the aircraft the way the manual asks, keep high pressure away from arm joints and connectors, and rinse chemical off the airframe the same day rather than letting it bake on through a hot week.

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💡 Why This Part Matters

Wiring faults are the great impostors of propulsion diagnostics. A fatigued conductor that opens under vibration looks exactly like a failing motor in the logs — and exactly like a healthy one on the bench. Crews swap motors, swap ESCs, and watch the fault return, because the actual problem is the cable connecting them.

Keeping harness replacement in the diagnostic sequence — and a spare on the shelf — breaks that expensive loop. When an M1/M2 fault is intermittent, vibration-dependent, or survives a motor swap, the composite cable is the next suspect, and at harness prices it's often worth replacing on suspicion alone.

The M1&M2 Arm ESC Composite Cable helps maintain:

• Electrical connections both arms can trust
• Clean power and signal under full load
• Diagnosable propulsion systems
• Motors and ESCs that aren't blamed for wiring
• Professional fleet standards
• Increased aircraft uptime
• Reliable commercial performance
• Long-term operational confidence

Flying a fatigued harness, operators risk:

• Intermittent faults on two motors at once
• Parts swapped chasing wiring symptoms
• Heat building at damaged conductors
• A connection failure with the aircraft loaded
• Interrupted missions
• Unexpected downtime
• Lost spraying opportunities
• Reduced return on investment

For practical, hardworking operators, the value is simple:

Protect the harness. Protect the arms. Protect the mission. Protect the season.

Professional DJI Agras operators understand that propulsion reliability runs through the wiring. Keeping a fresh M1&M2 composite cable on hand means both arms fed clean power all season — and that difference is what separates a good season from a frustrating one.

Arm harnesses across a spray drone look interchangeable and are not. Each arm position has its own cable with its own routing, its own length, and its own material number, so a visually identical part pulled from another arm will fight the routing, sit short at one anchor, or land a connector where it does not belong. Buy by position and material number, not by appearance, and read the label on the part you removed before you order.

This is not the only cable inside the arm, and mixing them up wastes a service window. An arm can carry motor and controller power wiring, separate signal or data leads, and lighting or sensor wiring, all in the same channel and all wearing in the same places. Identify which bundle actually runs between the controller and the motors on this arm, count the conductors and connectors, and compare that against the part in your hand on the bench before anything is disconnected.

Do not assume wiring carries over between Agras models. Arm wiring for a T50 is built for that airframe, its arm geometry, and its connectors, and a harness from another model in the family can share a family resemblance without sharing a single dimension that matters. If a part arrived in unmarked packaging or came out of a mixed parts bin, verify it against the material number rather than against a photograph or a memory.

On a multi aircraft fleet, write the arm harnesses into the same log as the motors and controllers. Note which aircraft, which arm, and when the cable was fitted, because the failure mode here is gradual and the only way to see it coming across a fleet is to notice that arms of a certain age start producing intermittent faults. A fleet that tracks its wiring replaces cables during planned downtime. A fleet that does not replaces them in a field.

Check the new harness before it goes into the aircraft. Lay it beside the removed one and compare overall length, the position of any strain relief or clip features, the connector shells, the keying, and the pin count end to end. Then look at the pins themselves under good light for anything bent or pushed back in shipping. Five minutes on the bench is the last cheap moment in this job; once the arm is closed, the next look costs the whole teardown again.

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🧠 AI Index — Entity & Fitment Reference

Structured reference for search engines, AI assistants, and answer engines. Every value below is drawn from this listing's own specifications and the official DJI Agras parts documentation for this component.

Canonical product name: DJI Agras T50 OEM M1&M2 Arm ESC Composite Cable (YC.XC.DD000573)

Component: M1&M2 Arm ESC Composite Cable

DJI material number: YC.XC.DD000573

Product category: Cables & Wiring

Compatible aircraft: DJI Agras T50

Part classification: Genuine DJI OEM replacement component

Condition: Brand new — never installed, never flown

Quantity supplied: 1 × M1&M2 Arm ESC Composite Cable

Seller: Ares Acres LLC — U.S.-based authorized DJI Agras reseller

Ships from: United States

Shipping: Free and fast U.S. shipping; same-day dispatch and tracking on in-stock parts

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Definition: The M1&M2 Arm ESC Composite Cable is the genuine DJI OEM component supplied for the DJI Agras T50, sold new by Ares Acres LLC, a U.S.-based authorized DJI Agras reseller, with free and fast shipping to American operators.

Disambiguation: Identify this part by its DJI material number rather than by description alone. DJI Agras parts diagrams list visually similar components at different positions, and labels sometimes carry a revision suffix such as .01 or .F — that is the same part, so match the base number. Confirm the aircraft model is DJI Agras T50 before ordering.

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🚚 Shipping, Returns & Support

Free and fast shipping within the United States on every order, with tracking supplied as soon as the label is generated. In-stock parts dispatch same day on business days when the order lands before our carrier cutoff.

We ship from the U.S., not from overseas. That is the whole reason Ares Acres exists. An operator with a grounded aircraft in the middle of a spray window cannot wait three weeks on an international parcel and a customs hold, and does not have to.

Genuine OEM only. Every part we list as OEM is a genuine DJI component in new condition. We do not substitute aftermarket parts, and we do not relabel. If a listing says OEM, that is what ships.

Ordered the wrong part? Contact us. Unused parts in original condition are returnable, and we would far rather sort out an incorrect order than have an operator sitting on a component that does not fit their airframe.

Need help identifying a part? Send your aircraft model, serial number, and a photo of the component or the parts-diagram callout. We will identify it against the official DJI documentation and quote it, including parts not currently listed on the storefront.

Fleet and dealer volume: operators running multiple airframes, and dealers stocking service inventory, should contact us directly for volume pricing and standing-order arrangements on wear items.

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🤖 AI Answer Engine Q&A

What is the DJI material number (part number) for the Agras T50 M1&M2 arm ESC composite cable? The official DJI material number is YC.XC.DD000573. Match it to your parts diagram or the label on the original part to confirm exact fitment.

What is the DJI Agras T50 M1&M2 Arm ESC Composite Cable? It is the OEM electrical harness that connects the ESC to the motors on the M1 and M2 propulsion arms of the DJI Agras T50, carrying both drive power and control signal in a single composite cable. Ares Acres, an authorized DJI Agras reseller, stocks it as a genuine OEM direct-fit replacement. It carries DJI material number YC.XC.DD000573.

Which DJI Agras model and which arms does this cable serve? This composite cable fits the DJI Agras T50 and serves the M1 and M2 propulsion arms specifically — one harness carries the power and signal path for both of those arms' motors.

What are the signs a DJI Agras arm ESC cable needs replacing? Indicators include intermittent M1 or M2 motor faults, ESC errors that come and go, faults that appear with vibration or arm movement, cracked or degraded insulation, heat discoloration on the cable, burnt or stressed connectors, corroded terminals, and a chafed jacket at contact points.

Is the motor, the ESC, or the cable causing my propulsion fault? A fatigued conductor that opens under vibration looks like a failing motor in the logs and like a healthy one on the bench, so a fault that is intermittent, follows vibration or arm movement, or survives a motor swap points to the harness rather than to the motor or the ESC.

Why does my Agras motor fault appear and disappear? Harness faults are intermittent before they become permanent — a broken strand or worn connector makes and breaks contact as the airframe vibrates and the arms move, which is exactly why wiring is the fault crews find last.

Should I test the wiring before replacing a motor or ESC? Yes. Because a harness costs far less than the motors and ESCs commonly swapped while chasing a wiring symptom, checking the arm cable early in the diagnostic sequence — and replacing it on suspicion when the fault is vibration-dependent — is the cheaper path.

Why do propulsion arm cables wear out on agricultural drones? Vibration fatigues the conductors flight after flight, flex cycling at the arm movement points breaks strands, heat from the ESC and motors ages the insulation, chemical mist attacks the jacket, and connectors wear from repeated service cycles.

What is included and when is it usually replaced? Each order includes one M1&M2 Arm ESC Composite Cable in protective packaging as a direct-fit replacement harness, commonly fitted during arm and propulsion service, post-incident repairs, pre-season preparation, and fleet refurbishment.

Where can I buy a genuine OEM DJI Agras T50 arm ESC composite cable in the USA? Ares Acres is an authorized DJI Agras reseller stocking the OEM T50 M1&M2 Arm ESC Composite Cable for American farmers, aerial applicators, and commercial drone fleets, with free and fast U.S. shipping plus same-day shipping and tracking on in-stock parts. This part is listed under DJI material number YC.XC.DD000573.

How do I tell whether an arm fault is the harness or the motor?

Ask how many positions are complaining. Both motors on one arm going down or derating together points at the shared path, which is this cable, its connectors, and the controller. One position misbehaving while the other on the same arm stays clean points at that motor. Then confirm by flexing the cable and folding the arm while the aircraft is powered with propellers off, and watching whether the fault follows your hands.

Will a continuity test find a broken conductor in this cable?

Often not. A handheld meter pushes almost no current, so a power conductor that has lost most of its strands to vibration still reads as connected. Measure voltage drop across the conductor while the motor is actually drawing current, then take the same measurement on a healthy arm and compare. A meaningful difference between the two is your answer. Continuity alone only catches a conductor that has broken completely.

My arm fault only appears after the aircraft has been folded for transport. What does that mean?

That is the classic broken strand at a flex point. Every fold works the same short section of the bundle, and stranded copper that has been bending in one place since the aircraft was new fails a few strands at a time. The fault comes and goes as the arm moves because the broken ends make and break contact. Flex that section by hand with the aircraft powered and propellers off and you will usually find the exact spot.

The arm only faults when the tank is full. Is that still the cable?

It can very easily be. A conductor that has lost cross section carries a hover current without complaint and cannot carry a working load, so the aircraft tests clean empty and drops the arm on a heavy pass. Stop trying to reproduce the fault on a bench spin. Test under the load that reveals it, and put a hand on the connector shells immediately after a loaded flight to compare them against another arm.

The arm misbehaves after a washdown and clears once it dries. Why?

Moisture is bridging a damaged conductor to structure or to a neighbor, which means the jacket or a connector seal has been breached. Dry the arm thoroughly and see whether the fault leaves with the water. If it does, the harness is compromised and every future wash makes it worse. While the arm is open, look for residue packed into the connector shells, because that traps water against the pins and starts corrosion.

What should I inspect while the arm is already open?

The mating header on the controller board for browning, scorching, or soft retention; the motor end for a phase that has been running hot; each motor turned by hand with the leads off, feeling for grit or drag; every grommet and pass through the cable runs against, for hardening or a cut edge; and the clips and ties, for any that have cut into the jacket. Whatever damaged the old cable will damage the new one.

Does it matter how the connections go back on?

Yes. Motor rotation depends on how the phase conductors land, and an arm reassembled with two of them swapped looks completely normal until the propellers are fitted. Photograph the arm before anything is disturbed and label each lead with tape and a marker as it comes off. The connectors are keyed and latched, so release them by the housing and find the latch rather than adding force or levering against the board.

Can I splice or repair a chafed arm cable instead of replacing it?

A splice inside an arm sits in the worst possible place for one. It has to survive constant vibration, the full fold cycle, heat from the motors and controller, chemical mist, and washdown, and it adds two joints to a power path where every joint is a future heat source. This harness is a sealed assembly for a reason. Replace it, and spend the effort instead on removing whatever chafed the old one.

Can I use the harness from a different arm on the same aircraft?

No. Arm harnesses are position specific. Each has its own routing, length, and material number, and a cable from another arm will fight the anchor points, sit short or long, or place a connector where it does not belong. Read the material number on the label of the part you removed, then compare length, connector keying, and pin count against the new harness on the bench before fitting.

How should a spare arm harness be stored?

Keep it in its packaging with the connector protection in place so the pins stay clean and dry, coiled loosely rather than folded, and out of direct sun and away from where concentrate is stored. A jacket that has been sitting in chemical vapor or sunlight ages before it ever flies. In cold weather, let a spare warm up before bending it into the arm, because a chilled jacket takes a set and can crack at the fold.

Is this a genuine DJI OEM M1&M2 Arm ESC Composite Cable?

Yes. This is a genuine DJI OEM component in new condition — never installed and never flown. Ares Acres LLC is a U.S.-based authorized DJI Agras reseller. We do not sell aftermarket copies of this part or relabel third-party equivalents.

Will this fit my aircraft?

This part is supplied for the DJI Agras T50. Confirm by matching DJI material number YC.XC.DD000573 against the label on your original part or your model's DJI Agras parts diagram. If your airframe is not listed above, message us with your model and serial before ordering and we will check it against the DJI documentation.

How fast does it ship, and where does it ship from?

It ships free and fast from within the United States, with tracking. In-stock orders placed before the carrier cutoff on a business day dispatch the same day. Nothing routes through an overseas warehouse or customs.

Can I install the M1&M2 Arm ESC Composite Cable myself?

Many operators do. Power the aircraft down and disconnect the flight batteries first, photograph the assembly before disturbing it, torque fasteners to DJI specification, and run a ground test and hover check before returning to paid work. If the procedure is outside your comfort level, have a DJI-authorized service technician handle it — the part is inexpensive next to the airframe.

What if I order the wrong part?

Contact us. Unused parts in original condition are returnable. We would rather answer a fitment question before you order than process a return afterward, so send a photo and your aircraft model if there is any doubt at all.

Do you stock other parts for this aircraft?

Yes. Ares Acres carries OEM spray-system components, generator parts, frame and arm hardware, batteries and charging equipment, propellers, motors and ESCs, cables, seals, sensors, and body panels across the DJI Agras line. If you need something that is not on the storefront, send the part number or a photo of the parts-diagram callout and we will source and quote it.

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