HOTSYSTEM Rocker Toggle Switch SPST ON/OFF DC12V 20A LED Illuminated 3Pin for Car Motorcycle Boat Marine Truck Trailer Auto and More (Pack of 1,Red) Long lifespan:About 10,000 Cycles Mounting:0.47in/12mm for screw hole. Humanized design:Toggle switch with a dustproof waterproof red cover,and the rocker with red LED light. Widely use:Can be use as a switch for various additional electric equipment inside&outside the car.(Such as ignitions,boost,fans,lights,winches,NOS systems,class A amp fans,computer LED's and more!). Wiring instructions:One of pin at the bottom connects battery positive pole,the other pin connects equipment positive pole.The side pin connects battery negative pole to illume the light.