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· Premium Member
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Discussion Starter · #1 ·
Quick question…

All four windows on my 79 300SD have simultaneously stopped working. All fuses are fine. I have seen a couple posts elsewhere on this exact problem pointing to a “failed relay“ that powers all four windows. (I have not yet found anything else that doesn’t work- and the car does not have a sunroof) Unfortunately none of these posts revealed where this mysterious relay actually resides…

Can anyone give me the location of this relay?…


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