Tail Light Issues

[longbedted12]

Hey everyone I need some help.

I have a 70 c-10 that had major wiring issues when I bought it. I replaced the whole dash harness and the turn signal mechanism and everything worked fine.

Now however, my tail lights don’t work. They light up when my blinker is on and when my head lights are on, thats the only time. only my left back up light works as well.

I’m stumped. Any info would help.

Thanks, longbedted12