ummmmm stuck with electrical problems

[1991ratrods10]

OK so yesterday i changed out fuel pump...i didn't drop the tank i raised one side of bed, well after i put all back together i noticed that its dark so i turned my headlights on which work fine but no tail lights, brake lights, turn signals, and no back up lights also. i changed out all lights two days ago.... today i went back to work on them and brake and turn signals work but are VERY DEM. still no back ups. and when i turn my head lights on there still isn't any tail lights. i know that the back lights are a two stage bulb tail, brake and turn are the same bulb but like i said im stuck dont know where to go from here.

[Big Mack Daddy]

Have you checked all your grounds?

[87wildside]

The ground for the tail light harness is on the driver side, same side you would lift to change the pump. Probably broke the ground wire. It is attached to the driver side frame rail right near the bumper bracket. Held on with either a 10mm or 11mm bolt.

[1991ratrods10]

lol im a dumb-ass yea that was it. had two wires (brown) both grounds were stripped off each other. thanks!!!!

[AMTDK]

I'm having a similar problem. My Brake and reverse lights don't work. I just recently put a new Fuse Box in. Truck runs and everything works aside from those two lights. Getting no power to the wires. Oh, also my turn signals have taken over my Driving Lights, and they blink rapidly when the signals are switched on. heh. Any thoughts?