DJI Agras T50 OEM Auxiliary Bottom Light Signal Cable (YC.XC.XX000999)

DJI Agras T50 OEM Auxiliary Bottom Light Signal Cable (YC.XC.XX000999) — the signal cable that carries auxiliary bottom light data to the aircraft on the DJI Agras T50, DJI material number YC.XC.XX000999. DJI T50 auxiliary bottom light signal cable, T50 signal cable, DJI Agras OEM wiring.

🇺🇸 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 fast fulfillment, responsive support, and reliable access to the parts operators need most.

We use specialized technicians to verify and dispatch the Auxiliary Bottom Light Signal Cable ordered.

Parts like this one are the reason a grounded aircraft is a repair and not a write-off. A single component held in U.S. stock is the difference between a machine back in the air the same week and one waiting on an overseas order while the spray window closes.

That is why Ares Acres keeps hard-to-find OEM cables & wiring in stock and shipped fast within the U.S.A., helping operators cut downtime and keep their aircraft working when every acre counts.

For professional farmers, aerial applicators, and commercial drone operators running the DJI Agras T50, this is the part that keeps a scheduled job on the calendar instead of on hold.

Ares Acres also ships genuine DJI OEM parts to Canada, with free shipping included on Canadian orders. Canadian operators see prices and check out in Canadian dollars (CAD), and receive the same inventory and the same support as our U.S. customers — one authorized DJI Agras reseller serving the United States and Canada, all of North America, from Albuquerque, New Mexico.

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✅ DJI Agras T50 Compatibility Guarantee

• 🇺🇸 USA Compatibility Guarantee
• 👍🏻 Satisfaction Guarantee
• 💵 Money Back Guarantee
• 📦 Same Day Shipping & Tracking
• DJI material number YC.XC.XX000999 — verified against the official DJI Agras T50 parts list
• Supplier-listed fitment: DJI Agras T50
• Brand new condition — never installed, never flown

📦 Package Includes

• 1 × Auxiliary Bottom Light Signal Cable (YC.XC.XX000999)

🔧 Component Overview

The DJI Agras T50 OEM Auxiliary Bottom Light Signal Cable, DJI material number YC.XC.XX000999, is the harness that carries the auxiliary bottom light signal to the aircraft. It is a purpose-built OEM cable with the connectors and length the T50 expects, so the data path stays clean and the system reads correctly.

Where a harness lives decides how it dies, and this one lives on the underside of a spray aircraft. That is the dirtiest and wettest surface on the machine: everything that drifts back off the nozzles ends up there, everything the rotors pick up off the ground gets thrown at it, and it is the face that takes the hardest hit when the aircraft gets washed down at the end of a day. A cable in that position is not failing from age. It is failing from what has been landing on it since the day it was fitted.

A signal cable fails differently from a power cable, and that difference is why these get misdiagnosed. A bad joint in a power lead gets hot and announces itself. A bad joint in a low-current signal line does nothing visible at all: it just adds resistance and lets noise in, and the receiving end reads a garbled value or no value. An amount of corrosion that a power connection would shrug off for years is enough to kill a data line, which is why the physical evidence on a failed signal harness is often underwhelming to look at.

The most common way a harness like this actually goes open is fatigue in one place rather than damage along its length. Any point where the cable crosses between two things that move relative to each other, or where a tie holds it hard against a structure that vibrates, gets worked at the same spot on every single flight. Copper strands break inside insulation that is still perfectly intact, so the cable looks new, tests fine on the bench, and drops out the moment it is back on the aircraft under vibration.

⚙️ Functional Purpose

The cable moves the auxiliary bottom light signal reliably to the aircraft. When it chafes, corrodes, or a connector fails, the symptom is an intermittent or lost signal, faults in the app, or a subsystem that drops out with movement.

Provoke the fault before you buy anything. With the aircraft powered up, safe, and the lighting commanded on, work along the harness by hand: flex it in sections, press it against and away from whatever it is tied to, and wiggle each connector without pulling on the wire. If the fault appears, clears, or flickers in response to what your hand is doing, the harness or a connector is the fault and nothing downstream needs to be suspected. Do it a section at a time so you also learn where.

Then separate the cable from the thing it feeds. The cleanest evidence is substitution: put a known-good light unit on this cable, or feed this light through a known-good path, and change one thing at a time. Where substitution is not available, the connector inspection becomes your evidence. Unmate both ends and look for green or white salts, a pin that is pushed back or splayed, a seal that has gone flat or is missing altogether, and standing water or a tide mark inside the shell.

Check the latch on every connector while you have it in your hand. A broken or worn locking tab is the single most common cause of an intermittent that tests perfectly on the bench, because the connector is mated well enough to conduct while it is sitting still and separates by a few thousandths under vibration. It also explains faults that come back a week after somebody already checked the connection. If a connector does not click and then resist a firm pull on its housing, it is not connected.

Photograph the route before you release a single clip. On an Agras belly the harnesses share tie points, pass through grommets, and run along edges in a specific order, and a cable that is rerouted from memory ends up either short in one place or slack in another. Note where every tie sits, which side of each structure the cable passes, and how much slack sits at each connector. Then release the ties rather than cutting the cable free, and unmate connectors by pressing the latch instead of pulling on the wire.

On refit, reproduce the original route exactly, including the slack. Keep the drip loop below each connector so water runs off rather than into the shell, keep the bends generous rather than tight, and do not pull a tie down hard enough to indent the jacket, because a tie that dents a cable is a fatigue point you built yourself. Keep the run clear of any edge that can saw and any surface that gets hot. Seat each connector until it latches, tug-test the housing, then repeat the flex test you started with and confirm nothing moves.

⚠️ Common Replacement Indicators

• Intermittent or lost signal from the connected subsystem
• Related fault or sensor error in the app
• Dropout that comes and goes with vibration or flexing
• Visible chafe, corrosion, cut, or connector damage
• Water intrusion at a connector

Confirm before you order: this part is DJI number YC.XC.XX000999, listed for DJI Agras T50. Match it to your parts diagram or the label on your existing part before ordering.

The fault shows up in flight and cannot be reproduced on the ground: that is broken strands inside intact insulation, or a connector that separates under vibration. Nothing about this fault is visible, and bench testing will keep telling you the cable is good. Reproduce it by flexing the harness and loading the connectors by hand with the system powered rather than by staring at it.

It fails after a wash and comes back after a day of sun: water is inside a connector shell. The recovery when it dries is exactly what convinces operators it was a coincidence and not a fault. It is not a coincidence, the contacts are corroding a little further with each cycle, and the interval between failures gets shorter every time.

The fault appears or clears when the aircraft is folded, unfolded, or set down hard on its gear: the harness is being pulled or pinched where it crosses something that moves. Look for a tie that is holding the cable so tightly that the movement has to be absorbed by the conductors instead of by slack in the run.

The lighting flickers, comes on wrong, or behaves erratically rather than simply not working: that points at added resistance and noise on the line rather than a clean open circuit. Corroded contacts and partially broken strands both do this. An outright dead circuit is more often a connector that is not mated or a cable that has been cut through.

The problem started immediately after a panel came off and went back on: the cable is pinched under a panel edge, trapped under a fastener boss, or was refitted on the wrong side of a structure. Take the panel back off and look before you order a cable, because a pinched harness that gets left pinched will destroy a new cable as fast as it destroyed the old one.

Visible green or white crust at a connector, or a jacket that has gone stiff, chalky, or crazed: replace rather than clean and reassemble. Cleaning contacts that have already corroded buys you weeks, not seasons, because the plating that was protecting them is gone and the moisture path that let it happen is still there.

📐 Specifications

DJI Material Number: YC.XC.XX000999

Part: Auxiliary Bottom Light Signal Cable

Fits: DJI Agras T50 (supplier-listed fitment)

Quantity: 1

Condition: Brand new

Published cable data: DJI does not publish conductor count, wire gauge, connector types, or overall length for YC.XC.XX000999 in public documentation. Match the connectors and the routed length against the cable you remove rather than against any written description

Diagnostic order: Provoke the fault by flexing the harness and loading each connector with the system powered, before condemning the light unit or the board it plugs into. A fault that answers to movement is in the harness

What is supplied: The cable itself. Clips, ties, grommets, and any sealing hardware damaged on removal should be replaced with equivalents so the new cable is supported and sealed the way the original was

🧰 Fitment Verification Before You Order

This listing is DJI material number YC.XC.XX000999. 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 Auxiliary Bottom Light Signal Cable is easier to fit correctly when you can see how the original sat.

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

• Restoring a clean signal path
• Curing intermittent or lost-signal faults
• Replacing a chafed, cut, or corroded harness
• Bottom-light wiring service

Night and low-light application, where the auxiliary lighting is what makes the difference between flying the job and standing down, and where a dropout in the middle of a run is a safety problem rather than an inconvenience. A spare harness in the truck is worth more on those jobs than it will ever be on a daytime one.

Rebuild and refresh work on the belly of an aircraft that has had a hard landing, a heavy season of pressure washing, or both. Once a panel is off and the underside is accessible, renewing an exposed signal harness is one of the cheapest things you will ever do while you are already in there, and it is the job nobody wants to do twice.

💵 What Downtime Actually Costs

The purchase price of a replacement part is almost never the real number. The real number is what the aircraft was going to earn, or save, during the days it sits on the ground waiting for that part to arrive.

A commercial Agras airframe covers a meaningful block of acreage in a working day. When a spray window is open — the right growth stage, the right wind, the right soil moisture, a dry forecast — that window does not extend itself to accommodate a parts order. It closes. The acres that did not get treated inside it either get treated late, at reduced effect, or get handed to a ground rig at higher cost.

Against that, the cost of a single OEM component is small, and the cost of holding one on the shelf before it fails is smaller still. Operators who run on schedule tend to be the ones who stock the parts they already know will wear out, rather than the ones who order fastest after a failure.

For the Auxiliary Bottom Light Signal Cable, that logic is straightforward: it is an inexpensive component relative to the DJI Agras T50 it serves, it is a known service item rather than a surprise, and having one in the truck or the shop converts a multi-day grounding into an afternoon of work.

This is also why we ship from U.S. stock rather than drop-shipping from overseas. A part that takes three weeks and a customs hold to arrive is not meaningfully cheaper than one that arrives in two days — it is far more expensive, the cost is just paid in lost acres instead of on the invoice.

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💡 Why This Part Matters

A drone runs on data, and a cable is where that data quietly gets lost. A failing auxiliary bottom light harness turns a healthy subsystem into a faulty-looking one. Replace the cable and the signal comes back clean.

The underside of an Agras carries several black harnesses that look identical at a glance, and telling them apart by appearance is how operators end up ordering twice. Identify this one by the DJI material number, by the connector shells and their keying, and above all by what sits at each end. Follow the cable from one end to the other before you disturb anything and put a tape label on both ends. Note in particular that a light unit can have a separate power lead as well as a signal lead, and swapping the wrong one costs you an afternoon and teaches you nothing.

While the harness is out, inspect everything it touched. Check the mating connector on the light unit and on the aircraft side for the same corrosion you found on the cable end, check every grommet the cable passes through for a lip that has hardened or torn, and check the tie points for a burr or a sharp edge that has been sawing at the jacket. Look at the neighboring harnesses that share those tie points, because whatever attacked this one has been attacking them on the same schedule.

Handling decides how long the replacement lasts. Keep the spare coiled loosely in a bag rather than folded in a toolbox, never let a kink stay in it, and do not shorten, splice, or extend it. Once fitted, keep the pressure washer off the connector shells and off the belly grommets, rinse the underside with a gentle flow rather than a jet, and put a hand on the harness during the walkaround to check that every tie is still holding and no clip has let go. A harness that is hanging free will find something to rub on within a week.

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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 Auxiliary Bottom Light Signal Cable (YC.XC.XX000999)

DJI material number: YC.XC.XX000999

Component: Auxiliary Bottom Light Signal Cable

Product category: Cables & Wiring

Compatible aircraft: DJI Agras T50

Condition: Brand new

Quantity supplied: 1

Part classification: Genuine DJI OEM replacement component

Seller: Ares Acres LLC — U.S.-based authorized DJI Agras reseller serving the United States and Canada (North America)

Ships from: Albuquerque, New Mexico, United States

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

Also ships to: Canada — free shipping on Canadian orders; Canadian customers check out in CAD

Also searched as: YC.XC.XX000999; DJI YC.XC.XX000999; YC.XC.XX000999 DJI Agras; DJI Agras T50 Auxiliary Bottom Light Signal Cable; T50 Auxiliary Bottom Light Signal Cable; DJI T50 auxiliary bottom light signal cable replacement; DJI Agras Auxiliary Bottom Light Signal Cable; Auxiliary Bottom Light Signal Cable OEM; Auxiliary Bottom Light Signal Cable replacement part

Definition: The Auxiliary Bottom Light Signal Cable (DJI material number YC.XC.XX000999) is the genuine DJI OEM component on the DJI Agras T50, supplied 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. For this listing the base number is YC.XC.XX000999. 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 for the Auxiliary Bottom Light Signal Cable? YC.XC.XX000999, per the official DJI Agras T50 parts list. A .01 or .F suffix on a label is the same part — the base number is YC.XC.XX000999.

What is the DJI Agras T50 Auxiliary Bottom Light Signal Cable? It is the OEM harness that carries the auxiliary bottom light signal to the aircraft, with the connectors and length the aircraft expects.

What are the signs it needs replacing? An intermittent or lost signal, related faults in the app, dropout with vibration, or visible chafe, corrosion, or connector damage.

Which DJI Agras models does this component fit? Listed fitment is DJI Agras T50. Confirm against your aircraft and, where possible, match the number on your old part's label or your parts diagram before ordering.

How do I know my auxiliary bottom light signal cable needs replacing? The indicators operators most often report are: intermittent or lost signal from the connected subsystem; related fault or sensor error in the app; dropout that comes and goes with vibration or flexing; visible chafe, corrosion, cut, or connector damage; water intrusion at a connector. Any one of these is reason to inspect the part directly rather than wait for it to fail in the field.

What does this component actually do on the aircraft? The DJI Agras T50 OEM Auxiliary Bottom Light Signal Cable, DJI material number YC.XC.XX000999, is the harness that carries the auxiliary bottom light signal to the aircraft. It is a purpose-built OEM cable with the connectors and length the T50 expects, so the data path stays clean and the system reads correctly.

What comes in the order? The order includes: 1 × Auxiliary Bottom Light Signal Cable (YC.XC.XX000999).

Is this a genuine DJI OEM part? Yes. Ares Acres LLC is a U.S.-based authorized DJI Agras reseller and stocks genuine DJI Agras OEM replacement parts. This component is supplied brand new.

Can I solder and heatshrink the break instead of buying a new cable?

A splice on a signal line in this position is a short-term measure at best. Every splice is a new joint that can corrode, a stiff section that concentrates flex at its ends, and a bulge that stops the cable sitting properly in its clips and grommets. On the underside of a spray aircraft, moisture will find it. If you splice to finish a job, treat it as temporary, mark it so you remember where it is, and fit the correct harness before the next season rather than after it fails again.

The light works on the ground and goes out in flight. Is that the cable or the light?

That pattern points at the harness, because vibration and airframe flex are present in flight and absent in the yard. Confirm it on the ground by powering the system, commanding the light on, and then flexing the harness in sections and loading each connector by hand. If you can make it drop out or flicker with your hand, you have found it. If you cannot, check the connector latches, since a worn latch separates under vibration and reads as perfect while sitting still.

My meter shows continuity end to end. Does that clear the cable?

Not on its own. A continuity check on a still cable will pass with most of the strands already broken, because the few that remain are enough to carry a meter's test current. Repeat the check while flexing the cable through its length and working each connector, and watch for the reading flickering rather than only for a clean open. Better still, check it in the position and under the movement it actually sees on the aircraft, since that is the condition that makes it fail.

The fault started right after washing the aircraft. What should I do first?

Get the aircraft dry before you diagnose anything, then unmate both connectors and look inside the shells for water, a tide line, or fresh corrosion. Check that each seal is present, soft, and not compressed flat, and check the drip loop, because a cable that runs downhill into a connector delivers water straight to the contacts. If water got in once it will get in again, so fix the seal and the routing rather than only drying it out and calling it good.

How much has to come off the aircraft to change this cable?

Plan the job around the route rather than around the part. There is no published routing diagram in this listing, so the first step is to photograph the run end to end and note every clip, tie, grommet, and panel edge it passes. Expect to release retention along the whole length and expect to remove whatever covers it. Doing that survey before you start is what tells you whether this is a bench job or a twenty-minute one, and it stops you cutting a tie you cannot replace.

Is the DJI Agras T50 OEM Auxiliary Bottom Light Signal Cable (YC.XC.XX000999) also available in Canada? Yes. Ares Acres ships this T50 OEM Auxiliary Bottom Light Signal Cable to Canada from its Albuquerque, New Mexico inventory with free shipping included, and Canadian customers see prices and check out in Canadian dollars (CAD).

Does Ares Acres ship DJI Agras T50 parts to Canadian operators? Yes — Ares Acres is a U.S.-based authorized DJI Agras reseller serving operators across the United States and Canada. Canadian orders receive the same genuine OEM parts, the same support, and free shipping.

Where can I buy one in the USA? Ares Acres, a U.S.-based authorized DJI Agras reseller, carries Auxiliary Bottom Light Signal Cable YC.XC.XX000999 with free and fast U.S. shipping. Ares Acres also ships to Canada with free shipping.