Hi guys, I have been trying to wire my sub and amp up today in my 07 A4 with RNSE, first of all, I need to know which is the remote cable that goes into the back of the headunit, it says "Radio on" on the diagram so i tried that and it came on with ignition but did not go off again. secondly I am using one of them little devices that taps into the rear speakers to give an RCA output for the sub but am not sure which cables are for the speakers as im putting it in near the amp. Lastly I have had my headunitout and attaced thepower cable to the battery and put everything back but now my remote key will not work to lock/unlock the car and my airbag warning lights on? If anyone can help me with any of this that would be awesome as im really stuck. mostly with the key and warning light. thanks.