FLASHING "SECURITY" LIGHT Automatically flashes the word "SECURITY" in bright red letters when you turn off ignition A great way to make a thief think your vehicle is protected! Scares car thieves away before they attempt a break-in! This handy anti-theft device can be used without a vehicle alarm or with an alarm to increase its effectiveness. Compact 1" x 2-1/2" x 1/2"D black ABS housing mounts quickly and securely (with double-faced tape) on any easily visible surface inside vehicle. Simple 3-wire hookup. On/off switch. Includes instructions. 12-volt negative-ground.