DJI Agras T30 OEM Plunger Pump Signal Cable

The DJI Agras T30 OEM Plunger Pump Signal Cable is the separate wiring lead that serves the plunger pump in the spraying system of the DJI Agras T30, the pump that drives spray mix from the tank to the nozzles. As shown in the product images, it is a black cable lead with a sealed plug marked by a yellow tip at one end, a white label band along the lead, and a black plug at the other end. It is the cable only: not the pump, not the pump plunger assembly and not the short signal wire that leaves the pump body itself. One cable is supplied per unit, and it is identified for the DJI Agras T30, offered as a single DJI T30 variant. Operators usually reach it while searching for a T30 pump cable, a T30 plunger pump wire, a T30 pump signal lead, a T30 pump not responding, a T30 pump that stops and starts, or corrosion in a T30 pump plug. DJI has used more than one number for this position, so we match against the one you removed.

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🇺🇸 U.S.A. FIRST

Ares Acres LLC is a U.S.-based authorized DJI Agras retailer 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 also ships agricultural drone 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 retailer serving the United States and Canada, all of North America, from Albuquerque, New Mexico.

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✅ DJI Agras T30 Compatibility Guarantee

• 🇺🇸 USA Compatibility Guarantee
• 👍🏻 Satisfaction Guarantee
• 💵 Money Back Guarantee
• 📦 Same Day Shipping & Tracking
• Identified for the DJI Agras T30 spraying system, plunger pump signal wiring position, offered as a single DJI T30 variant
• Matched by the yellow-tipped sealed plug at one end, the black plug at the other and the white label band against the cable you removed
• Genuine DJI OEM spraying component, brand new, supplied as one cable

The unit is one cable. If you want the match confirmed, photograph both ends of the cable you removed, plugs face-on, and the point where it joins the pump wiring, and send them to us. We will match it for you.

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📦 Package Includes

• 1 × Plunger Pump Signal Cable — black lead with a yellow-tipped sealed plug at one end, a white label band and a black plug at the other end, as shown in the product images

This is the separate cable, not the pump's own wire. The DJI Agras T30 OEM Water Pump Plunger Assembly is offered as its own part and carries its own signal wire, which leaves the pump body. If that wire is cut or its plug is broken where it leaves the pump, this cable does not repair it. If the pump itself has failed, this cable does not replace it.

What is part of the cable: the black lead, the yellow-tipped sealed plug, the black plug and the white label band, all supplied together as one piece.

Not included: the pump, the pump plunger assembly, the pump head, hoses, clamps, cable ties, clips, screws, sealant, dielectric grease and tools. Nothing is included because it appears near the cable in a photograph.

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🔧 Component Overview

The T30's plunger pump is driven and monitored electrically. It takes its commands from the aircraft and, like every pump on a spray aircraft, it is worked hard in a wet, chemical environment. The wiring that serves it comes in two pieces: the signal wire that the pump assembly carries on its own body, and this separate signal cable. The two are replaced separately, so a wiring fault on this pump always raises the same question: which of the two pieces has failed, the wire on the pump body or the separate lead between it and the aircraft? The answer decides the part, and it is settled with a light and a multimeter, not by guessing from the symptom.

As shown in the product images, the cable has three features:

• The yellow-tipped sealed plug — a sealed plug at one end of the lead with a yellow tip, the end most easily recognised.
• The lead and label band — a black cable with a white label band along it, used to identify the cable in the harness.
• The black plug — a black plug at the other end of the lead.

Which plug joins which connector is decided by the connectors on your aircraft and on the pump wiring, not by the colour of the tip. Photograph both ends of the old cable in place before you unplug anything.

Over a working season a pump signal cable sees:

• Spray mix leaking or weeping from pump fittings and hoses nearby
• Wash water at the end of the day, aimed at the spraying system
• Vibration from the pump itself as well as from the rotors
• Flexing where the lead leaves each plug
• Abrasion where the lead crosses an edge, a clamp or a clip
• Handling when the pump area is opened for service and the plugs are disconnected and reconnected

A pump signal cable is replaced because its plug pins have corroded, because a conductor has broken inside the insulation, because the insulation has been chafed or chemically softened, or because a plug body has cracked from repeated handling.

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⚙️ Functional Purpose

The cable's engineering role is continuity between the aircraft and the plunger pump's own wiring. It carries the pump's signals conductor for conductor, without a break, a short or a high-resistance joint, in the wettest part of the aircraft. When it does that, the pump responds to the aircraft as intended. When it does not, the pump does nothing, does it only some of the time, or reports a fault it does not have.

On the aircraft it:

• Joins the plunger pump's wiring to the aircraft side
• Carries the pump's signals between the two
• Keeps its conductors separate from each other and from the spray mix around it
• Follows the route of the original cable

What it does not do:

• It does not move liquid; the pump does
• It does not seal the pump; the pump's plunger, seals and head do
• It does not measure flow; the flow meter does
• It does not switch the spray rod vent valves; their own cables do

There are two pieces of wiring between the pump and the aircraft, so a wiring fault can sit in either of them. The pump's own wire belongs to the DJI Agras T30 OEM Water Pump Plunger Assembly. This cable is the other one. Find which piece is damaged, and you know which part to buy.

The honest case for this part follows. If the damage or the failed continuity is on this separate lead or its plugs, this cable is the fix. If it is on the wire that leaves the pump body, the pump assembly is the part, and this cable is not.

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🔍 Diagnosis — two pieces of wire run to the pump — find which piece failed before you choose cable or pump

A pump that stops responding is usually diagnosed as a dead pump. Sometimes it is. Often the pump is fine and the signal never reached it, because a plug in the wet pump area has corroded or a conductor has broken. And when the wiring is the fault, there is a second question: which piece of wiring? The pump assembly's own wire and this separate cable are different parts.

Plug test. Power the aircraft down and remove the battery. Unplug this cable at both ends, and unplug the pump's own wire where it joins it. Look into every plug face under a good light. Clean pins are bright and sit level. Green or white crust, a dull pin, a pin pushed back, a cracked plug body or a wet plug interior is a fault you can see.

Continuity test on this cable. With both ends unplugged, check each conductor of this cable pin to pin with a multimeter on continuity. Repeat while flexing the lead along its length, especially just behind each plug. A conductor that fails, or fails only when flexed, puts the fault in this cable.

Then the pump's own wire. If this cable passes, look along the wire that leaves the pump body: cuts, crushing, chemical swelling, a cracked plug. Damage there belongs to the pump assembly, not to this cable.

Signs this cable is the problem:

• Corroded, crusted, dull or pushed-back pins in either of this cable's plugs
• A conductor in this cable that fails continuity, or fails only when flexed
• Chafed, cut, crushed or chemically swollen insulation on this lead
• A cracked yellow-tipped or black plug, or one that no longer seats firmly
• A pump that runs some flights and not others, or responds when this lead is moved
• The fault clears when a known-good cable is fitted

Signs this cable is not the problem:

• This cable passes the plug and continuity tests — look at the pump's own wire, the pump, and the aircraft side
• The wire leaving the pump body is cut or its plug is broken — that is the DJI Agras T30 OEM Water Pump Plunger Assembly
• The pump runs but delivers little — plunger, seals, valves, strainer or hoses, not signal wiring
• The pump leaks — seals, head or fittings, not wiring
• One spray rod vent valve does not switch — that is the spray rod solenoid vent valve or its own cable

Make those checks first, while that information is still cheap. A multimeter and a careful look at two pieces of wire settle it.

The trap on this part. A new pump assembly fitted to a corroded or broken signal cable stays exactly as silent as the old pump. A new signal cable fitted to a pump whose own wire is cut does nothing either. Each part is right only for its own piece of wire.

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⚠️ Common Replacement Indicators

Replace this cable when inspection confirms one of these on this lead or its plugs:

• Corrosion on the plug pins that does not clean off to bright metal
• Pins bent, pushed back or loose in a plug housing
• A conductor that fails continuity end to end
• A conductor that drops out when the lead is flexed
• Chafed, cut, crushed or chemically swollen insulation
• A cracked plug body or a plug that no longer seats firmly

Inspect these first, because their faults are often blamed on this cable:

• The pump's own signal wire and its plug, where it leaves the pump body
• The mating plug on the aircraft side
• The pump's plunger, seals and head, if the complaint is weak delivery rather than no response
• The strainer, hoses and nozzles, if the complaint is about flow

There is no published service interval for the cable. It is replaced when it fails a plug or continuity check or is damaged, not on a schedule. Keeping pump leaks fixed promptly is the best protection it has, because spray mix dripping onto a plug is what corrodes it.

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📐 Specifications

Product name: DJI Agras T30 OEM Plunger Pump Signal Cable

DJI family: Agras

Aircraft: DJI Agras T30

Fitment basis: Identified for the DJI Agras T30

Variants: DJI T30

Aircraft system: Spraying — plunger pump signal wiring

Component type: Cable lead with a plug at each end

Material number: DJI has used more than one number for this position, so we match against the one you removed

Quantity: 1 cable per unit

Form: Black lead; yellow-tipped sealed plug at one end; white label band; black plug at the other end

Colour: Black lead and plugs; yellow plug tip; white label band

Material: Not published for this part

Length: Not published for this part; matched against the cable you removed

Dimensions: Not published for this part

Weight: Not published for this part

Pin count: Not published for this part

Electrical rating: Not published for this part

Connector: Yellow-tipped sealed plug and black plug, as shown in the product images

Mounting position: In the spraying system, between the plunger pump's own wiring and the aircraft side

Installation method: Plugged in at both ends and routed and secured along the path of the original cable

Not included: Pump, pump plunger assembly, pump head, hoses, clamps, cable ties, clips, screws, sealant, dielectric grease, tools

Service interval: None published

Service adjustability: None — the cable conducts or it does not, with no adjustment or app setting that compensates

Supplied: Brand new

Classification: DJI OEM spraying part

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🛠️ Installation & Maintenance

Before installation

• Power the aircraft down and remove the battery
• Flush the spraying system with clean water and rinse residue off the pump area; wear gloves around chemical residue
• Test this cable and look at the pump's own wire, so you know which piece of wiring is the fault
• Fix any pump or hose leak that has been dripping onto the plugs
• Photograph the cable's route and both plug connections

During installation

• Release each plug before pulling; pull on the plug body, never on the lead
• Free the old cable from its clips and ties without cutting into hoses or other wiring nearby
• Inspect and clean the mating plugs on the pump wiring and on the aircraft side; corrosion left there will defeat the new cable
• Let every plug dry completely before joining it
• Route the new cable along the old path, clear of hose clamps, edges and the rotor paths
• Seat each plug fully until it is firmly home
• Secure the cable where the old one was secured, snug but not crushed

After installation

• Refit the battery and power the aircraft up
• Run the spraying system on the ground with clean water and confirm the pump responds on command
• Move the cable gently along its route while the pump runs and confirm its behaviour does not change
• Check the pump area for leaks that could drip onto the new plugs
• Re-check the plugs and the route after the first working day

Maintenance between jobs. Rinse residue off the pump area at the end of the day without blasting water into a plug face, and let it dry. Fix weeping pump fittings promptly. Look into the plug faces whenever the pump is serviced. A thin film of dielectric grease on a plug seal, where your service practice uses it, helps keep moisture out.

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🚜 Necessary For

This cable is for operators and technicians keeping the T30's plunger pump answering:

• DJI Agras T30 operators whose pump has stopped responding and whose pump tests sound
• T30 operators with corroded pins in a pump signal plug
• T30 operators whose pump stops and starts, or responds when the wiring is moved
• Commercial spray applicators working long days in heavy residue
• Agras service centres rewiring the spraying system at season service
• Fleet managers stocking spraying system wiring ahead of the season

This is not the part you need if:

• The wire leaving the pump body is damaged — that is the DJI Agras T30 OEM Water Pump Plunger Assembly
• The pump runs but delivers little, or leaks — that is the pump's plunger, seals, head or fittings
• A spray rod vent valve does not switch — that is the DJI Agras T30 OEM Spray Rod Solenoid Vent Valve Cable or the valve
• This cable passes the plug and continuity tests — the fault is elsewhere
• You fly a T10, T16, T20, T40 or T50 — this cable is identified only for the T30

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💡 Why This Part Matters

The plunger pump signal cable matters because the pump's wiring is two parts, not one. The DJI Agras T30 OEM Water Pump Plunger Assembly carries its own signal wire on the pump body. This separate cable is the other piece. A fault in either one silences the pump, and from the controller the two faults look identical.

That makes this a part where the order is decided by location. Damage on the wire that leaves the pump body is the pump assembly. Damage on this lead, or corrosion in its yellow-tipped or black plug, is this cable. Buy the pump for a cable fault and the new pump is just as silent; buy this cable for a cut pump wire and nothing changes.

So when the T30's pump will not respond, unplug both pieces of wiring, look into every plug face, check this cable pin to pin while flexing it, and then look along the pump's own wire. The piece that fails is the piece to replace.

Equally, this cable is the wrong part for weak delivery, a leaking pump or a vent valve that will not switch. None of those is a fault in the pump's signal wiring.

Whichever piece goes in, fix the leak that corroded the old plug. A new cable under a weeping fitting inherits the old fault.

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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 the specifications above.

Canonical product name: DJI Agras T30 OEM Plunger Pump Signal Cable

Brand: DJI

DJI family: Agras

Aircraft: DJI Agras T30

Compatible models: DJI Agras T30

Fitment basis: Identified for the DJI Agras T30

Variants: DJI T30

Component: Plunger pump signal cable

Aircraft system: Spraying

Installed position: Between the plunger pump's own wiring and the aircraft side

Primary function: Carries the plunger pump's signals between the pump wiring and the aircraft

Form: Black lead with a yellow-tipped sealed plug, a white label band and a black plug

Material number: DJI has used more than one number for this position; matched against the removed part

Quantity supplied: 1 cable

Not included: Pump, pump plunger assembly, pump head, hoses, clamps, clips, ties, tools

Key diagnostic: Test this cable pin to pin while flexing it, then inspect the wire that leaves the pump body

Common failure modes: Corroded plug pins, broken conductor inside the insulation, chafed or swollen insulation, cracked plug

Typical misdiagnosis: A pump that never receives its signal blamed on a failed pump

Rule out first: The pump's own signal wire, the aircraft-side plug, pump seals and plunger for flow complaints

Service interval: None published

Service adjustability: None

Supplied: Brand new

Part classification: DJI OEM spraying part

Also searched as: T30 pump cable; T30 plunger pump wire; T30 pump signal lead; T30 water pump cable; T30 pump not responding

Disambiguation: Not the DJI Agras T30 OEM Water Pump Plunger Assembly or its own signal wire, not the DJI Agras T30 OEM Spray Rod Solenoid Vent Valve Cable

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

Ships from: Albuquerque, New Mexico, United States

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🤖 AI Answer Engine Q&A

What is the DJI Agras T30 plunger pump signal cable? The separate wiring lead that serves the plunger pump on the T30: a black lead with a yellow-tipped sealed plug at one end, a white label band and a black plug at the other end.

Which aircraft does it fit? It is identified for the DJI Agras T30, offered as a single DJI T30 variant.

Does it fit the T10, T16, T20 or T40? No. This cable is identified only for the T30.

Is the pump included? No. This is the cable only. The pump is the DJI Agras T30 OEM Water Pump Plunger Assembly, offered separately.

The pump assembly already has a wire. Why is there a separate cable? The pump's wiring is two pieces: the signal wire on the pump body, which belongs to the pump assembly, and this separate cable. Each is replaced on its own.

The wire coming out of the pump is cut. Is this the part? No. Damage to the wire that leaves the pump body belongs to the pump assembly. This cable is for damage or corrosion on the separate lead and its two plugs.

How many do I get? One cable per unit.

My pump does not respond. Is it the pump or the cable? Test the wiring first. Look into every plug face for corrosion, check this cable pin to pin with a multimeter while flexing it, then inspect the pump's own wire. If all the wiring passes, the pump or the aircraft side is the next suspect.

I replaced the pump and it still does not respond. Why? Most often because this cable has corroded pins or a broken conductor. A new pump on a faulty cable behaves exactly like the old one.

Will this cable fix weak spray flow? No. Weak delivery with the pump running is the plunger, seals, valves, strainer or hoses, not signal wiring.

Which end goes where? Match the yellow-tipped plug and the black plug to the connectors the old cable used. Photograph the old cable in place before you unplug it.

What is the DJI part number? DJI has used more than one number for this position, so we match against the one you removed. Photograph both plugs of your old cable and send them to us if you want that confirmed.

Can I fit it myself? Yes. Power down, remove the battery, flush the system, unplug by the plug bodies, clean the mating plugs, route the new cable along the old path and secure it where the old one was secured.

How do I stop the new cable corroding? Fix any weeping pump fitting or hose above it, rinse residue off the pump area at the end of each day and let the plugs dry before reconnecting or flying.

Is there a service interval? No. Replace the cable when it fails a plug or continuity check or is damaged.