You will have to buy a cd changer and then the radio will see the cd then you can interupt the audio between the cd changer and the factory radio and run the xm signal into the radio and then it will work! If you want it done for you our repair shop can make an adapter cable with switching that will work for you and even have the p-bus connector on it so it will plug directly into your pioneer tuner. Ck with Cleeve @
lajollaaudiorepair@pacbell.net
Scott@lajollaaudio