So it's came to my attention that I have no reverse lights. Checked the fuse under hood and it was popped. Swapped new fuse and it blew, so swapped to a 30 vs 25 and led bulbs and as soon as I went to Reverse (5spd) KOEO, fuse popped. The wiring towards the rear of the truck looks to be a jumbled mess of things back there,mainly where the OEM trailer wiring comes out. There are no other fuse that is blown, dome light works fine etc. I haven't tried the switch on the side of the trans yet. If I put a new fuse and use a jumper wire, if it still pops, what next?

 

You have a wire shorted to ground. Chafed, incorrectly connected, whatever. Gonna just have to investigate the "jumbled mess".

Not sure why people do wiring that way; butt hay, seems pretty common, so yeah...