s10 rear tail lights

I got a 91 s10 and Im having problems with my wiring for my tail lights. Can someone send me a diagram for this please.It seems they dont work all dont except the emergency flasher. I dont have a bed on. Is there a ground that needs hooked up?? any help would be awesome

you are missing a ground, check the wiring harness in the back, there should be a loop or a bare wire if it was pulled off.

yeah, there should be a ground wire just like bdroppeddak said. it will most likely be a black wire if im correct.

yah i had the same problem for ever and couldnt figure out what was up but it was the ground it did the exact same thing yours did