no electrical power. please help

Hey guys. Really need help now. I was taking a few things off of my 96 Tacoma the other day. I had my light bar ect.. on a separate fuse box. the key was in the off position while I was removing wires and now I don't have headlights, signal lights, radio, and it will not turn the starter over. I think it could be a relay gone bad if a wire accidentaly arced but all my fuses are good. the warning lights on the dash (battery, oil, and check engine) come on. I am trading trucks with my uncle and would really like some advice. thanks in advance.

 

You probably disconnected the battery this has happened to me before

 

Ground wire to the fender. Forgot to hook it back up. Stupid me