Already have a DVD player in your vehicle? Don't need a headrest monitor with built in DVD? Save money and purchase our New Headrest LCD Monitors. They have RCA A/V Inputs for connection to your already existing In-Dash, or other Car DVD Player. Simply plug them in and turn on your DVD player and you now have a custom Mobile Entertainment System. These will even work if you have a Portable DVD player that you currently plug into your vehicles cigarette adapter socket.