Hello, I have been browsing around numerous BMW forums searching for help on installing my after-market radio. I have installed aftermarket radios in 15+ cars before without trouble, but when I remove my factory stereo, I see wiring I have never seen before. I have been searching around looking for color guides for the wires in there, because the wiring harness I bought (which is the one recommended for the 1990 BMW 325I) does not even come close to fitting the stock wire configuration. Also, aside from a big wire cluster, there were 2 sets of 2 tightly coiled wires with little metal plugs at the end. From the research I did, I understand that I most likely have a factory amp installed, only problem is the car is in the shop at the moment so I can not confirm this. I already checked Chilton guides, wouldn't find a wiring diagram or color guide. I looked in the guides on this website, no luck. Either I am missing it, or it is ridiculously hard to get a hold of. I was wondering if anyone could identify wire colors possibly associated with this configuration, and also a decent guide on rewiring if it would be better this way. The deck I am trying to install is----> SONY CDXM8810. I have a 1990 BMW 325I 2 Door coupe, manual transmission. I also have a Kenwood KAC-7202 Amp I want to get in there soon as well Thank you very much for the help
