If you are running a stock head unit then you will probably need to get an FM transmitter. There is one designed for the iPod or you can just get a generic one. It basically allows you to tune your radio the FM transmitter frequency to listen to the iPod.
The other way is if you have an aftermarket headunit with a Line-in or Aux-in connection that you can use a 1/4inch stereo cable to hook up your iPod directly. Most aftermarket units don't come with aux-in, though so a FM trasmitter may be your best bet.
The other way is if you have an aftermarket headunit with a Line-in or Aux-in connection that you can use a 1/4inch stereo cable to hook up your iPod directly. Most aftermarket units don't come with aux-in, though so a FM trasmitter may be your best bet.