Well I ran my trailer up late last night thanks to a wiring problem I cant figure out

I hooked up to the trailer at about 3:30pm and was checking the heater and acc in side and found that I had no power. Well I let someone use the trailer and they left a light on with drained the battery so I thought well Ill just plug the truck to it and start the truck. Still no dice, I got the power meter out and nothing from the truck checked the fuse in the truck it was fried

looked around for my other fuse for a half hour and no luck. My bronco came home then so I hook it up and again no power checked the plug no power from the bronco. I got out my fuse and checked it and it was good, so I started testing the lights on the trailer and they all worked so my relay was good. I spent 3 hours trying to find the problem and had to just pull the trailer up.
I got up to my spot and there was a little city about a half mile down from it. These guys had light ran all over there camp 3 big wall tents a few trailers and where pretty load. Well on my way out I saw a bull elk not even 50yds up the road from there camp
