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Discussion Starter #1
I'm working on a 95 S500 coupe and the entenna doesn't raise. I took it apart and I can extend it manually by rotating the belt driven gears but once I plug it back in weather the radio is on or of it retracts. so it seems the antenna is functional my issue seems to me the signal supplied to the antenna. any sugguestions?
 

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Discussion Starter #2
I tested the red/white wire and it has constant 12 volts. The brown wire shows continuity to ground. If I jump the red/white wire to the black wire the antenna raises. so what else should I check? there are 2 black boxes behind the trunk carpet right where the antenna mounts one where the black wire goes into and the other where the antanna reception cable screws into...
 
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