Trailer Brake Controller Wiring Harness Diagram. The Trailer Brake Control and Additional Plug-In Wiring Harness. The Brake Controller comes with a wiring harness that is the kind you have to splice into your vehicle's wiring.
I am replacing my brake controller with a new Prodigy but I have long lost the wiring diagram that shows what wire does what coming out from under the dash The Ford harness is not colored the same as the Prodigy. I've searched under the dash for the wiring for a brake controller to no avail. The Tacoma harness doesn't have any of the data bus wires going to the trailer brake like the Tundra does.
Hooking up the brake controller was pretty straightforward with the standard wiring harness that comes with the controller.
Find solutions to your trailer brake wiring diagram question.
Our RV parts ship out same or next day. I looked up underneath the driver's side footwell and I peeked into where the steering column is and I can't find the connector. There's four wires in that harness: power, ground, brake sense line, and trailer brake output.
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