Listeners have two distinct connection options. The first employs the FM direct audio adapter, which plugs into the rear antenna connection of your factory or after-market car stereo. By connecting directly, you'll enjoy a better sound than provided by the receiver's built-in wireless FM transmitter, with no static or interference to get in the way. The second option is to plug your satellite receiver directly into your stereo's auxiliary input, provided it has one. The latter option further improves the sound, as users don't need to rely on the FM airwaves at all to transfer the audio signal.

The hard-wired power adapter, meanwhile, works with both 5-volt and 12-volt vehicle power sources (depending on which Sirius tuner you own). By using this hard-wired connection, you'll leave your cigarette lighter free to charge other devices, such as your cell phone or personal DVD player. The adapter features both two-pin and three-pin connectors, a pair of 16-inch wire leads used to supply power and ground, and a 2 amp fuse and fuse holder that go between the adapter's power wire and your vehicle's accessory wire.

The professional vehicle kit requires a compatible Sirius car docking kit and is backed by a one-year warranty.