THE BRAKES ON MY TRAILER WON'T WORK WITH THE WIRING HARNESS ON MY .
2001 GMC Truck
May, 12, 2011 AT 1:40 AM
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?