OK, just joined the forum. So, I'm a noob, but not noob to forums in general. I searched and found this thread and have a question. I have an 07 335i with the 3 wire mirror. I also have a friend parting our a 2008 335i with the homelink/autodim/compass mirror. I am taking his mirror and am wondering if I can just take the wire from his car and swap it, or do I need this special retrofit cable you guys are talking about here. I am assuming in this case, I can just swap everything over. Please let me know if anyone has done it this way or if anyone knows if this is the same cable and connections. Thank you.
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