I just bought a 2002 Audi A6 3.0 with a Bose system and I'm trying to replace the stock receiver with an after market head unit but I've run into some problems. The main one is that there is no 12v power switch to activate the stereo once the car is turned on and I was told to wire it to the windshield wiper fuse, which would but a hassle. I'm also having trouble identifying which connectors apply to certain parts of the wiring harness. The picture of the wiring scheme, the top connector next to the 10A fuse, I've determined that + is 12v constant (red and yellow), - is ground (brown wire), but I still don't know what K (lime green), Bose (small brown), or Alarm Ground (small, brown and white) correlate to. And if anyone knows what the yellow connector is, I'd be interested to know.
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2002 Audi A6 Stereo Wiring Help