The guy working on my car told me it was the body control module. He said he changed it and everything was fine. I brought it home turned on the lights that night and still no tail lights or dash lights. I have changed the headlight switch and body control module. Does anybody have any idea what it could be. Is there a tail light relay somewhere. Need help please.

Thanks

 

I am having the same problem with my 87' Turbo Z - no tail lights, no dash lights and no turn signals. Fuses are good, all lights work when harzad switch activated. Have you determined the problem that you were having?
Thanks for any help you can provide.