I have a concert head unit and Bose in my 2003 S3.
I see a few 2nd hand audi and new alpine 6 disc changers about and reference to a "BUS" cable in the rear of the car, already being fitted?
What does this cable look like and where is it? Is it fitted to cars with Bose?
Also, if you have Bose and the subs in the n's rear panel, where does the changer go...? O/s panelo appears to be full too....? So can I fit a changer and if so what do i need?