J&M DLX PSGR CTRL GL18 Provides an easy to use headset volume control, a large CB radio PTT button for positive activation and a passenger microphone on/off switch to help eliminate intercom wind noise from the passenger position This unit mounts to the left or right side seat grab rail for user friendly convenience Electrical connections plug into the stock wiring harness under the seat for no-hassle installation Kit includes all necessary parts for mounting and connection,