What Colors Are What on a Factory Brake Controller Harness on a 2007 Dodge Ram

Question:

The factory harness that is plugged into under the dash ,The wires are not labled, What wire is what??, i am trying to hook up a brake controller and the wires are different color than mine

asked by: Monte F

Expert Reply:

If there is a green wire in the bundle, the wires are as follows:

Truck: White with red tracer - Controller: Black
Truck: Blue with white tracer - Controller: Red
Truck: Green with black tracer - Controller: White
Truck: Blue - Controller: Blue

This is the typical wiring code for newer Dodge trucks, but not every vehicle will be wired this way. The only way to be sure is to test the wires with a circuit tester, like part # PTW2993, to make sure they are the proper wired, or to use a brake controller harness that fits the connector.

I have added a link to a brake controller help page with wiring codes as well as a video of a brake controller being installed on a 2007 Dodge Dakota with a tow package using similar wiring parts.

expert reply by: Patrick B