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Old 3rd Nov 2009, 2:02 pm   #3
ben
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Join Date: Aug 2006
Location: Madrid, Spain / Wirral, UK
Posts: 7,484
Default Re: Car 8 track advice!

In my experience the metal chassis is common return for the speakers and negative for the DC input. Grey and green, as I recall, are the colours often used for speaker left and right lines. Red for 12v, but trace it back to double check.
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