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Old 01-07-2007, 12:31 PM   #2
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Join Date: Nov 2006
Location: NEW ENGLAND
Posts: 58
Your problem is a common one. Anytime you replace a headunit in a car and use an adampter to plug into the existing OEM amp, you get alternator whine. I'm not an installer, but every installer I spoke to (5), said the same thing. You must also replace the amp or you will get alternator whine.

In the past, when I've replaced head unit's myself, I got alternator whine.

I know it's expensive, but put back the Becker, return the new head unit to Crutchfield and have a professional install a new head unit & amp. At least this way, you don't pay him/her until the sound is clean.

Good Luck
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