I want to transplant a e46 wheel in to my e31 and have question about the audio controls.
I have an Alpine aftermarket head unit and have bought all the adaptors etc, no worries that.
But as I dont have the e46 loom, can anyone tell me about the plug below?
It has a Red, white, grey and blue wire to the plug. Which wires do I use? (I presume we have +ve, -ve and 2 signals (one of which I'll use).
Really appreciate any help.