1983 300D. My drivers side rear window goes up and down just fine when controlled by the rear window switch, however it does not work with the master switch in front. I check the fuse and it is fine. I replaced that master switch with one I knew to be good and still the same problem. What else should I check?

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Andrew Villasenor
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1984 300D turbo 5-speed manual(daily driver)
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