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Message: <blockquote data-quote="crx4luke" data-source="post: 4399179" data-attributes="member: 559304">There isn't an aftermarket harness for those old bmws. plus, most of those were either amped or common ground. Typically the blue wires twisted together are the left, and the yellow wires are the right. (maybe the other way around, but i'm pretty sure i have it right) Sometimes too there is a fader switch right above the radio in those. If that is the case then you can usually just hook up the front speaker wires to the input on the fader switch and go from there.Those cars ar a pain, good luck.</blockquote>

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