I have no taillights or brake lights on my 71 cutlass convertible. When I bought new bumpers and tail light housings and gaskets I replaced all the bulbs so they do work. I know this because when I was reinstalling my dash I was fumbling around all those wires under the dash and the tail lights came on and stayed on for about 30 minutes but while try to get them to turn of I noticed 2 things I still didn't have brake lights and there was a little switch with the light wire running to it and it was really warm to the touch. But I don't know anything about electrical issues on a car that is 11 years older than I am. HHHHEEEEEELLLLLLLPPPPPPPP also NO TURN SIGNAL IN THE BACK BUT I HAVE THEM IN THE FRONT AND I HAVE HAZZARDS IN THE FRONT AND BACK