Just a thought. I use the personal antenna for the Delphi MyFi xmradio reciever(I bought it before I had the charger, so yes I now have both). I just clip the antenna on the sun shade of the sun roof or on the headliner around the sunroof depending on wether I have it closed open or vented. That way I dont have to mess with running wires or drilling holes or scratching paint ...