no signal,brake or reverse lights.
 

Had my rear spring plates changed a few months ago in my 76 Targa and when I drove it home I found my signal and brake lights weren't working. Checked the system out yesterday and found the reverse lights are inopt also. Is there any common ground that may be off or should I start at the fuses and go to the rear lights themselves and check there. My battery was dead and I only got a new one yesterday so now I can at least test things.Any help would be great.SmileWavy:D

Check fuses in front trunk and make sure the wiring harnesses are plugged in to the way back in the engine compartment. (way back meaning bumper side in the far rear corners)

Reason I say this (wiring harness) is the only thing not mentioned are your driving lights. Are they working in the rear?

yes driving lights work fine.Headlights fog lights high beams rear marker lights on the side and rear all illuminate.