Right ok, now i have searched, but i havn't come back with anything that can possibly help me!! I have a 2002 A4, with Concert II head Unit. now in my previous car, i had a VIBE 10" Sub (complete with built-in amp). now i need to buy the cable kit (RCA's, Power Cable, Earth etc etc), which isn't a problem, now i have never wired up an amp to a factory headunit (of any sort). Now i don't want to start snipping and cutting at wires etc, unless there is no other option. I have tried to find a wiring diagram of the Concert II, but still not found anything. Also any advice on which wire to use for the remote for the amp?? any further advice also appreciated. Thanks alot for any help....ive been meaning to do this for a while, but never got round to doing it due to the above.