Where is the Common Ground Splice - BMW Forum - BimmerWerkz.com
3-Series (E21, E30) Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.

 
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#1 (permalink) Old 04-17-2006, 08:53 AM
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Carbarns is an unknown quantity at this point
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Where is the Common Ground Splice

I'm installing a new head unit in my 87 325 and understand the "common ground" design.

Cheap lazy B... that I am, not wanting to run new speaker wires, I'd like to locate where the common grounds are spliced together.

They run out from behind the old receiver and off to the right behind the instrument panel. Do they spice down at the left front speaker or somewhere else?

Many thanks in adance!
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#2 (permalink) Old 04-17-2006, 06:36 PM
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Starmavin is a jewel in the rough Starmavin is a jewel in the rough Starmavin is a jewel in the rough Starmavin is a jewel in the rough
The go into the amp in the trunk, you will be a million times better off running your own wires. BMW stock radio has only left and right output, you adjust the front to rear with the amp control above the raido. BTW buy a crossover for the front tweeters, they work really well, too well....

Last edited by Starmavin; 04-17-2006 at 06:42 PM.
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