No Power at rear trailer plug

Ok, so I was working on repairing the lights on my 12 year old sled trailer since most of the wiring has rotted. Like a bonehead I had only twisted the wires but had not taped them. I use a 7 to 4pin adapter for my trailer that has power-on LEDS inside it.

I think something may have touched because now the adapter has no power. I tried another adapter I had and zippo. I looked at a couple of keys fuses under the dash and in the engine bay but still nothing. I am going to check them all today with a test lamp.

All lights on the truck work. All of them. I don't have any fuses on the trailer.

I am hoping it a fuse somewhere and not some black box located in a shit spot that is the culprit.

I have recently added a new ground to the trailer since the old wire, as I said above was rotten-insulation brittle.

Any suggestions would be a big help. Truck is still under warranty.

 

i would recheck the ground on the trailer. or maybe the adaptor your using is shot. sounds like your on the right track by testing with a test light or volt meter. good luck

 

There are fuses in the fuse box under the hood that are probably blown. They are marked trailer lights. I know this because it is where I tapped my relay coil wire when I did my driving light mod on my 2006.

 

I would properly check the "towing" fuse for continuity with a multimeter. Then make sure you have power at the rear plug, before plugging in the trailer. Once I am sure there is power in the rear plug, try the adapter again. If the fuse blows again, there is the culprit. If it doesn't, then you know the trailer has a short.