If you have a shark fin antenna and a SAT button on the radio, it is pre-wired.

 

i have xm in my car but never subscribed, how do i sign up, how much is it a month and is it worth it?

 

To sign up all you should have to do is call XM or sirius and they should be able to walk you thru everything. i personally would only get it if it is all prewired cuz the people that i have seen with it installed after words look really bad. wires and tape all thru the car.

 

bumping this post to test my new signature...

Oh yea dont get the sirius sportster... the fm modulation sucks.