I just got a 93 Firebird. When I'm driving with the lights off and I hit the brakes 2 lights on the left rear shine bright, but on the right only one shines bright and other on the far right shines dim. Also, my right turn singal doesn't work. The interior light flashes once every 10 seconds maybe. When the interior light is stuck on, the one bulb on the right shines bright and the other flashes randomly. They are all new bulbs. What can I do!

 

Bad ground.

Check you loose wires in the light housing and in the trunk area.

 

There might be some corrosion in the sockets as well. This caused problems in my turn signals.