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      04-25-2011, 02:38 AM   #13
07AWe92
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Drives: 2007 Alpine White 328i Coupe
Join Date: Apr 2010
Location: Stockton, CA

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@ shinrock the Metra 70-9003 harness connects the aftermarket headunit to the OEM harness

The Metra 71-9003 connects to the OEM radio. It's used to relocate the radio to the trunk or where ever you like.

I believe I'm right on this, I'll find out during the installation...lol