I was using the front light, NOT the rear. Whatever was wrong had to be in the dash behind the gauges, because when the door ajar light kept going on and off a few days later a good hard bang on the binnacle fixed the problem. Now the light ONLY comes on when a door is opened (at last!) The glove box no longer turns on that light, nor does the front interior light. When I get some time this weekend I plan on taking the binnacle off and seeing just what was making contact back there and was causing problems. Patrick 1880