I installed a Kenwood CD player in my Cabrio. I used the wireharness I bought at the local car audio place and it worked great. We had some issues with the car and brought it into the dealership and they said the computer in the car was not receiving any data and that they needed the stock stereo back in it. Apparently it is like this on the Beetle too as the manager proceeded to tell me it happens all the time and said there was even a VW tech bulletin about it. Anyway, I need to get that sodding casette player out of there, has anyone done an install of a 3rd party stereo in these cars and gotten around this. I know my wiring is correct, the dealership even said the wiring was correct but there is some custom connectin that either needs to be cut or made for the computer to get data. Anyone know what that is? I am concerned that the check-engine light will fail to come on (again) or that the oil light will fail if something goes wrong.