As stated above, I had been having trouble diagnosing and fixing a balky RIGHT brake light. Bulb was good, cleaned all contacts and while it seemed to work fine for a while after a few days the intermittent bulb failure sensor started lighting up on the dash again. So, the other night I had my son help me troubleshoot the problem. While he stood at the back of the car I stepped on the brake pedal and sure enough, a brake light was out...the LEFT one ! Sometimes it helps to actually look and not over think these glitches. So, now with two new bulbs and contacts cleaned on both sides, allis right with the world.