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7 Series - E23 / E32 (1977 - 1994)

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Old 11-07-2011, 11:06 PM
dycer21 dycer21 is offline
Dycer
Location: NC
 
Join Date: Nov 2011
Posts: 2
Mein Auto: 1991 750iL
Exclamation 91 750iL -Head unit install help

i am trying to install an aftermarket head unit in my 91 750il, i have wiring diagrams that help a little bit but the issue im facing is the speaker wires, the diagrams show + & -, but the car only seems to have + going to the factory radio, and i cant find the correct wires to get any sound what so ever. any help on this would be greatly appreciated.
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1991, 750il, head unit install, radio, wiring


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