86 GT Pontiac Fiero?

[Jett]

Having electrical problems with 86 GT Pontiac Fiero. Brake light, turn signals, and tail lights will not light in the rear. Headlights work fine. Mechanic thought it is a bad ground wire or unattached ground wire. Can any one tell me where the ground wire is located or a website that has this information?

 

[bobweb]

Check the fuse box using your owner's manual to see if there's a separate fuse for those items. Once you locate the fuse that powers those items, check the voltage on the fuse output to see if you have battery voltage there.

http://www.ehow.com/how_112724_fix-faulty-car.html