Z3 Roadster (E36/7) New sub amp wiring - Bimmerfest - BMW Forums



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  #1  
Old 10-31-2013, 01:51 PM
pem216 pem216 is offline
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Talking New sub amp wiring

Does anyone know the input wiring for a new sub amp when leaving the existing main amp wiring intact? There are three wires coming into the HK sub amp from the main amp:
green on terminal #20
blue w/ green stripe on terminal #7
black w/green stripe on terminal #16
Is the green a common?
I intend to solder RCA plugs to these wires as input to a new Alpine class D mono sub amp.
Thanks for your help!!!!

Last edited by pem216; 11-04-2013 at 04:03 PM.
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Old 10-31-2013, 04:46 PM
Blacklane Blacklane is offline
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Have you looked over this thread?: https://www.bimmerfest.com/forums/sho...d.php?t=690361
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Old 10-31-2013, 05:52 PM
pem216 pem216 is offline
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sub amp wiring

Thanks Blacklane for the response.
I have reviewed that thread and still cannot positively determine if the GREEN wire ON TERMINAL #20 is the common for the L & R channels going into the SUB AMP. If it is then I will connect some RCA male plugs and use the brown as the common to the shield, and plug into my new Alpine mono amp.
Does this make any more sense?
Thanks again!

Last edited by pem216; 11-04-2013 at 04:04 PM.
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Old 10-31-2013, 06:33 PM
pem216 pem216 is offline
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Should be GREEN wire above

Last edited by pem216; 11-04-2013 at 04:05 PM.
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Old 10-31-2013, 07:01 PM
Blacklane Blacklane is offline
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On BMWs, brown is always the power ground. Audio signals are usually twisted pairs with one stripe being the "muted" color of the other stripe. So say you have a twisted pair of yellow with blue stripe and yellow with gray stripe, the gray stripe will be the negative one.
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Old 10-31-2013, 07:13 PM
pem216 pem216 is offline
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Thanks Blacklane, for the information!!
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