Iztoss 16A 12V Round 4pcs red blue orange green LED Rocker Indicator Toggle Switch 3 Pin On-Off SPST switch for Car Boat Truck Trailer Dimension: about 28 x 23 x 23 mm,4 color option ,4pcs in pack,send 12 wires for free Voltage: 12V DC,amperage rating:16A All you need is a 3/4" hole and the switch will sit in nicely; no more square cut outs. 3 Pins With LED, ON /OFF [ SPST ] How to connect: the middle part connects to the switch; the two side parts connect to the 12V DC ( Gold one -- Negative Pole; Silver one -- Positive Pole )