Lamp out indicator light ON

Beginning today, everytime I place the car in-reverse the Lamp Out indicator light comes on. I had a friend check the rear and both lamps are working. I checked both bulbs and they are good, working german made bulbs (from the MB dealer). I switched lamps from side to side, still did not fix the problem.

Any ideas? PS. I hate to drive around with a light on the dash indicating something amiss, drives me crazy, so must fix. )



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Jim Aldridge
95 E320, SE
90 Accord