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      02-27-2013, 12:03 AM   #3
gte460z
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Drives: 2008 328xi
Join Date: Feb 2013
Location: Boston, MA

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The OEM Hifi amplifier will accept speaker level inputs. There should be no need to wire RCA plugs into the Metra adapter with the stock BMW Hifi audio package.
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Georgia Tech Graduate, BS in Electrical Engineering