1.They will control virtually any accessory you can throw at them up to 20 AMPS, and are Motor safe ! 2.Racers use them to activate ignitions, boost, fans, the military fire missiles, you can control lights, winches, NOS systems, class A amp fans, computer LED's, and more! 3.Widely use: can be use as a switch for various additional electric equipment inside&outside the car. (Such as Critical lights, chassis lamp, fog lamps, dome light) Package Include: 1 x Yellow LED Switch