2003 BMW M3 antenna location diagram

2003 BMW M3
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MHASLAM
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Electrical problem
2003 BMW M3 6 cyl Two Wheel Drive Manual

I'd like to install my xm radio from other car into the M and need to figure out which lines in rear window are the FM antenna. (has defroster.)
Does anyone have, or know where to get a diagram without having to buy a service manual?
not easlily searched online.
Sep 27, 2009 at 9:13 AM
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DOCHAGERTY
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The antenna amp is in the "C" pillar, left side. Diversity antennas do not lend themselves to sharing without a possibility of causing interference in other frequencies or bands, does the manufacturer have their own antenna or do they compel you to tag on to what is in the car? If so try that first, or split the signal from the output from the cars' antenna amplifier and good luck. ♥
Oct 4, 2009 at 11:54 AM