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How I fixed my 1994 Pontiac Formula Firebird Tail lights
Tony Casanova
 

Search here:
www.theformulasource.com

www.theformulasource.com/cgi-bin/ikonboard/topic.cgi?forum=5&topic=53

http://www.theformulasource.com/cgi-bin/ikonboard/topic.cgi?forum=5&topic=94

Symptoms:

Drivers side turn flasher would not blink (cycle on-off). When applying the brake one light would turn off. Changing the flasher did not fix the problem.
 

Solution:

I replaced the two bulb sockets on the drivers side and the flasher worked again.

How to test:

Take a multimeter and make sure the bulb socket is grounded.  If the socket is not grounded the socket ground wire has gone bad.
 

Problem:

Bad ground wires on the bulb sockets.  There are three wires and the ground wires was broken on two sockets.