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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!
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Wednesday, June 24th, 2020 AT 9:41 AM

3 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 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
  • 52,797 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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