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Trailer brake controller problem? Sahwn 5-17-10  
I am having a problem with either my brake controller or my trailer. When I plug in my trailer I am not getting the led on the controller to turn on. I have checked for power on the blue wire at the plug of the truck and that looks good. I have power coming into the controller directly from the battery via a 30 amp circuit breaker. I can get the led to light up when I ground my test light and puncture the blue wire directly out of the controller. When I hit the truck brake the test light lights up and the led changed from green to red. I have ran a new blue wire and new power wire from the battery and a new ground for the controller. I am leaning towards a ground issue either on the truck or the trailer (p.s. I just bought the suburban and the trailer from separate people so I don't know which if either of them work correctly) Any information on this would be greatly appreciated. Thanks
Re: Trailer brake controller problem? BUBBA THE BUS TECH 5-18-10  
You very likely have a broken wire or bad ground on the trailer.
It also sounds like you havent checked the ground on the plug, they are a large problem for most trucks.
Good Luck
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