Availability of 3036-P Wiring Harness for 2025 Ford E-450

Question

Question:

Looking for a plug-in pigtail module for trailer brake on a Ford E-450 cutaway. I already have the brake controller. Do you have a Tekonsha Prodigy P3 that comes with the 3036 harness?

asked by: Charles R

0

Expert Reply:

Hi Charles; none of the major manufacturers have ever confirmed their brake controller wiring harness will fit the 2025 E-450. We have also seen customers try to use something like the 3036-P and find that the pins are off.

Regardless, the wiring harness isn't available at this time. The parent company for Tekonsha declared bankruptcy and the company is currently for sale. As a result, popular parts like these are on indefinite backorder. This isn't the first time this has happened, and we really have no idea when they will be back in stock. This includes the Prodigy P3 and the wiring harness.

You said you already have the brake controller, but your follow up asked if we had the P3 with a harness. Are you wanting to replace what you have? My recommendation is to install the Redarc Tow-Pro Liberty Brake Controller # RED52VR.

Redarc is incredibly reliable and you can mount the control knob anywhere in your dash. This comes with a universal wiring harness so you will have to cut off the factory connector and splice for installation. If you aren't replacing the controller you will still need to splice in for installation.

What are you planning on towing with your E-450?

expert reply by: Robin H

0

Redarc Tow-Pro Liberty
(click to enlarge)

Charles R.

2/18/2026

I have since found that recent year Ford E-series including the 2025 model year uses the Tekonsha 303600/3036-P harness. The has been verified from the Ford "Body Builders Layout Book" which is available online, and shows the pinout that matches the 303600. Many sites state the correct harness is 3034-P, which is incorrect. Thanks for your help.

Robin H.

2/18/2026

@CharlesR thanks for sharing that. The bankruptcy just happened recently so hopefully you can find it in stock elsewhere before they're gone.

William M.

5/26/2026

@CharlesR I am also looking for a brake controller wire harness for a 2025 E450 Motor home. Did you use the Tekonsha 303600 wire harness? Did the pins line up and was it plug and play? Thank you, William McKenna

Answer 1

Hey John, thanks for reaching out! Before I dive into it, I just want to throw it out there that the Curt Spectrum #C36QV, Tekonsha Voyager iD #TK86DR, and the Redarc Tow-Pro Elite #RED65CR are all great brake controllers and you'll be happy with…

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Answer 2

If your vehicle has a factory brake controller plug, you can simply use the Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers – Ford, Item #3034-P, which will connect to the vehicle plug and the brake controller. On the new E-450…

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Answer 3

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Answer 4

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Answer 5

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Answer 6

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Answer 7

To install a Redarc Tow Pro Liberty in your 2023 Toyota Tacoma Sport you will need the following parts: Redarc Tow-Pro Liberty Brake Controller item #RED24FR Plug-and-Play Wiring Harness for Redarc Tow-Pro Trailer Brake Controllers item #RED99FR…

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Answer 8

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Answer 9

It sounds like you are speaking of the wires for the brake magnets. If this is correct, you will need to connect one of the wires to the brake controller output wire on your trailer connector and the other wire will need to be grounded to a clean…

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Answer 10

That's a very good question, we tend to be extra cautious and say to use 10 gauge wire because that would be more than enough. When you get into longer trailers that will end up using a lot of wire the heavier gauge wire becomes more necessary.…

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Answer 11

The Redarc Tow-Pro Liberty #RED24FR is the way to go over the Elite #RED44FR as you get the nicer functions of the Elite at a lower price. The Elite has the ability to be the more preferred proportional style of controller as well as a time-delayed…

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Answer 12

If you just need a 4-pin to 7-pin trailer wiring adapter, then you can use part #C57672. This will plug into the 4-pin trailer connector on your brother's vehicle and give him the 7-pin socket for the trailer. Keep in mind, this will only give…

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Availability of 3036-P Wiring Harness for 2025 Ford E-450

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