The brakes on my trailer won't work with the wiring harness on my truck.

2001 GMC TRUCK
115,000 MILES • V8 • 4WD • AUTOMATIC
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TERRY COX
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I have brake lights on my 2001 GMC Sierra, but I can not get brake lights on my boat trailer. I have a factory installed wiring harness. I have checked the fuses. I have power coming into the brake light switch with the orange wire and power going out through white wire only when brake pedal is depressed. Is this correct?
Thanks,
Terry
May 12, 2011 at 1:40 AM
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RASMATAZ
  • ✓ASE Certified Mechanic
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  • ASE Certified Mechanic
That's correct-check and test the vehicle stop fuse it goes thru there when the brake pedal is depressed
Jul 18, 2011 at 8:38 AM
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HARLANDHARLAN
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Ground trailer to truck
Nov 26, 2012 at 3:31 AM
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