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      09-16-2010, 07:24 PM   #3
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Drives: 2008 E90 M3
Join Date: Dec 2009
Location: NJ

Posts: 49
iTrader: (1)

It goes right underneath the trunk mat. For me, it was a super easy install because my car already had Sirius. Disconnect the battery, undo a few bolts and wires, reconnect the wires and bolts and plug battery back in. If your car is prewired, I don't think install is too much more difficult. Although you do need another bracket (MSRP $17.34) and your idrive reflashed/programmed. Here's a guide:
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