Installation of Brake Controller Wires on 2008 Chevy Silverado

Question:

I bought a factory pigtail for my stock trailer brake control because someone cut the pigtail off, the new pigtail wires are all white and the wires under the dash are red, blue, white, blue/white and orange, do u have a way I can wire it, it’s a 2008 Chevy duramax

asked by: Jeremy

Expert Reply:

Since your new wires are all white you will need to determine the function of each using a circuit tester like # PTW2993. The brake light input will be only show power when you hit the brake pedal. The 12V input will be constantly active power. The ground will not have any power and the brake output wire will be the remaining wire once the ground to the frame is found. Then match the function to the following colors:

Blue=Brake Controller Output (normally blue on controller)
Red=12V Power (normally black on controller)
White=Ground (normally white on Controller)
Blue/White=brake light switch signal (Normally red on controller)
Orange is the Center High Middle Stop Lamp and will not be used on your brake controller install.

I've attached a couple articles to assist.

expert reply by: Jason S