E46Fanatics - View Single Post - New Double Din Install With Vent Modifications
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Old 11-29-2005, 01:18 PM   #20
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Join Date: May 2005
Location: Illinois
Posts: 18
My Ride: 2004 M3 Cabrio
Ithsa, The link below is a good starting point for how the factory system is put together and what colo codes the wires are.

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