Tumbler switch with red lighting and a maximum load of 12V / 20A. The switch has a built-in diameter of 11.5 mm and a hard plastic housing. To connect the switch, 12V must be connected to the + pin, the middle pin will pass the 12V when the switch is on. The lamp in the button will illuminate automatically when the switch is switched on, for this the GND pin (left) must be connected to ground.