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I'm at work and can't verify this but I can remember having a similar problem with my trailer when the lights on one side were not working. I went as far as changing bulbs and then discovered that under the hood in the fuse box there are left and right trailer fuses. I found that the left trailer fuse was blown and that was causing the prob. This was on my wife's 2001 Suburban so check it out. After that I started making sure the vehicle was not running when I plugged in the trailer lights because I feel the DTR lights being on caused the fuse to blow because of the arcing.
 

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Thank you, I will check out the fuses as soon as I can. I have a 2004 silverado 1500 and didnt even know that there were fuses that were connected to the trailer lights from the truck. The problem is definetly on the truck side I took a voltage meter to the truck plug and this is when I realized I had no power from the truck to the trailer when I make a right turn. Thanks everyone I will keep you posted. :happy:
I should have said that before but through proccess of elimination, I also found no power at the truck plug for the left lights so I checked the fuse box diagram under the hood and found trailer fuses there. Hope it works!:great:
 

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Well the problem was a blown fuse just like dwill3015 suggested. The fuse ia located in the fuse box inside the truck in the dashboard next to the driver door. Thank you for helping me :whip: the problem.
Glad it worked out to be a simple fix. I could not remember which fuse box it was in but knowing the one under the hood had more, I guessed that one. :lol:
 
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