Your car radio is capable of Sirius broadcast. But you still need a Sirius tuner and antenna. Then you will need these parts installed, powered, and connected to the radio.
An analogy will be: Imagine you are at home and you have a TV (that would be your radio in the car). Supposed that you want to have a satellite transmission, may it be Dish Network or DirecTv. You have to have some equipment. You will need an antenna (similar to your car) and satellite converter box (this will be your Sirius tuner in the vehicle). These two units will need to be installed, plugged into the wall for power, and connected via RJ45 cable to the TV for reception. Similarly, you will need to install the tuner and antenna, need to run power and ground to the tuner module, and connect it to the antenna and to the TV. Lastly, you will need to call Sirius for subscription.
If you go to Best Buy or your local audio shops, they will have plenty of tuners and antenna to choose from. If you can't install them, their technicians can install for you for a fee, obviously. Example of a tuner and antenna will be
Thursday, January 29th, 2009 AT 6:44 PM