Is there a fuse somewhere for the aux. power going to the trailer plug? I am not getting any aux power to the trailer so i now have no interior lights on my enclosed trailer.....

 

I had the same problem with my truck/trailer. Turns out that a 20 amp fuse was blown in the truck fuse box. It's real easy to short out the power connection when connecting it up. Some of the newer trucks have a 30 amp rating but I'd urge you to stick with the specs.

 

Check for a blown fuse in the power distribution box on the left fender under the hood.