Trailer brakes not working

Tiny
TOOTALL4247
  • MEMBER
  • 2003 CHEVROLET 2500
  • 6.6L
  • V8
  • TURBO
  • 4WD
  • AUTOMATIC
  • 308,000 MILES
Hello. I have an issue with my trailer brakes not working when I press the brake pedal. It works in manual override. Is there a wire on the brake pedal switch that sends voltage to the trailer brake controller when the pedal is pressed? If so what color is it? Thank you!
Wednesday, June 24th, 2020 AT 9:41 AM

3 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,796 POSTS
Good afternoon,

I attached the wiring diagram for you to view. The white wire is the signal wire that should go to your controller.

https://www.2carpros.com/articles/how-to-check-wiring

Roy
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Wednesday, June 24th, 2020 AT 11:28 AM
Tiny
TOOTALL4247
  • MEMBER
  • 3 POSTS
That’s what I thought. I just tested it with a voltage tester. Thank you Roy!
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Wednesday, June 24th, 2020 AT 11:41 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,796 POSTS
You are welcome.

We are always glad to help.

Roy
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Wednesday, June 24th, 2020 AT 11:51 AM

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