View Full Version : trailer wiring ground (Truck)

01-30-2013, 05:00 PM
my running lights on my truck work but the ones for my trailer dont...i know its my truck and not the trailer because i have checked using a different truck...everytime i plug my trailer in the trailer running light fuse blows...i have been told that it is most likely a bad ground...i have tried tracing the wiring back but have had no luck finding the ground...does anyone know of where i can find it or any other solution to this problem? the truck in question is a 05 silverado 2500HD reg cab 8 ft bed

01-30-2013, 05:25 PM
It sounds more to me like a short in the trailer taillight wire. A bad ground won't blow the fuse it will just keep the lights from working.

Crawl under your trailer and follow the brown wire and I will bet you will find a place where it has rubbed bare and is in contact with the metal on your trailer.

There is an 85% chance that will be your problem and if it is not then it could be inside one of the lights, even just the licence plate light.

01-30-2013, 05:27 PM
I would check the wiring at the trailer plug first,then go from there .Anywhere somebody has made modifications or repairs ,are the usual suspect areas .

01-30-2013, 05:53 PM
It does the same thing with my jetski trailer as well as my dads boat trailer but the lights on all the trailers work fine with my dads truck...one of the wires right by the trailer plug on the truck has a 3" section that has been cut and replace with some other wire piece...how should I go about fixing that homemade repair
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01-30-2013, 06:52 PM
I use solder and shrink tube .