Add Satellite Radio to a second vehicle: No need for a second subscription; just install this Kit in another vehicle - your spouse's car, the family minivan, an RV, or even a boat - and then simply move your XM onyX Radio between the two. Easy to install: Revolutionary SIRIUS|XM PowerConnect™ FM Transmitter works through your vehicle's radio* with easy Do-It-Yourself installation. The Color-Coded Vehicle Dock makes it simple to connect. *FM radio required, or use the included Aux In Cable if your vehicle has Aux In capability. Will also work with cassette adapter (sold separately).