What Color Are The Brake Controller Wires On a 2018 Ford E-450 Cutaway

Updated 05/01/2020 | Published 03/05/2019

Products Featured in This Question

Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers - Ford

(348)

$18.01

Tekonsha Prodigy P3 Trailer Brake Controller - 1 to 4 Axles - Proportional

(6643)

$169.94

Question:

what are the ford wire colors When I ordered you told me that there wasnt a direct connect wire. I did find there was wire by the steering colum

asked by: Tom

Expert Reply:

The trailer brake controller wires on a 2018 Ford E-450 are blue for brake output, yellow/red or gray/red for 12 volt power, violet/white or yellow/green for stop light, and black/gray or black/violet for ground. These wires will all be located inside a 14 pin grey connector located behind the dash. I understand that you said you have a 2019 Ford E-450 which may be why you were told there is not a plug-in harness available however, the schematics for a 2019 Ford E-450 have not yet been released by Ford as of March 2018. With that being said, you most likely have a 2018 Ford E-450 not a 2019 Ford E-450. The reason for this is that the chassis model year is almost always one year older than the actual motorhome. For example, if you have a 2019 Winnebago Outlook on a Ford E-450, the Ford E-450 chassis was most likely made in 2018.

If you will be using a Tekonsha brake controller such as the Tekonsha Prodigy P3 Trailer Brake Controller part # 90195 then the correct plug-in harness for this is the Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers part # 3034-P. If you have a different brake controller just let me know what that is and I will see if a plug-in harness is available.

expert reply by: Conner L

Ray D.

4/28/2020

I have a 2017 Aspect winnebago with a ford E-450 super duty v-10 gas engine I need to know the color code of the four wires that are under the dashboard above the break pedal that aren’t connected to any thing I don’t have a special harness for this so i need to know which wires go to connect to. Thanks for any help you can give me.

Chris R.

4/29/2020

I wasn't able to track down the color coding for the factory brake controller wiring on your E-450. If the wires aren't labeled at all, your best bet will be to test each of them for function with a circuit tester.

Ray D.

4/29/2020

@ChrisR Thanks for trying the parts person at a rv store said that the 3034-p wiring harness will work on my 2017 winnebago Aspect of which is a 2016 Ford F450 super duty if this is thr wrong harness please let me know thanks for your time.

Chris R.

5/1/2020

Yes, the Plug-In Harness # 3034-P is the correct harness for the 2016 E-450 chassis. You had mentioned having 4 bare wires behind the dash though instead of a plug, so I would just try and verify that the factory plug is in fact present on your chassis to allow for this hookup.