Features:The round rocker switch is rated for DC 12 volts at 20 amps.SPST: ON-OFF control; 2 pole design (On/Off), 3rd poles with LED to be connected to earth.Dot styled 4 different colored LED lights: blue, red, green, and orange.Made from high quality material, sturdy housing ensures long lasting durability.It is easy to install, small, black, and low profile to fit most panels.HOW TO INSTALL1.The two silver prongs go in-between the power wire. Positive from power source is middle prong.2.The gold prong just needs to be grounded or connected to the negative battery terminal.Earth (negative from power source) is the golden prong.Power in (positive from power source) is middle prong.Power out/on (for whatever you're switching) is the furtherest away from gold prong.*If you want to use the built in indicator light, hook up the ground (gold terminal). If you don't care about the indicator light, don't hook it up and just use it as a two pole power interrupt switch.Specifications:Material: PlasticCurrent: 20AVoltage: 12V DCLED Color: Blue, red, green, orangePackage Size: 14*9*3.5cm / 5.51*3.54*1.37inPackage Weight: 108g / 3.8ozPacking List:20 * Rocker Switch(4-color)