Have a '92 Volvo 240GL. The right rear brakelight is the problem. When I put the bulb in with just the car lights on, all lights are fine except for the right brake light. It is lit up in the "brake applied" position(brighter than the normal taillight). When I push the brake with it like this, the fuse blows. The circuit board was pretty old and raggy, so I have replaced it and problem still exists. Both brake lights are new. I can't figure out what is causing this? With the right brake light removed (this is the only way I can press the brakes without blowing the fuse) everything works fine...including the left brake light and the 3rd (rear window light) brake light.
Can anyone help me? I don't know what is going on.