A lighted rocker switch provides simple on/off operation of electrical circuits, with the added bonus of a light in the switch that lets you know when the circuit is closed. They're often used by car audio and customization enthusiasts as a way to control equipment like lights, fans and amplifiers, while adding a bit of style to the installation. If you can strip some wire, installing a lighted rocker switch is a pretty straightforward job.

Step 1

Cut your ground wires to length. You'll need two ground wires. The first ground wire must be long enough to reach from the power source (usually a battery) to the "gnd" connection on the switch. The second ground wire must be long enough to reach from what you're powering (like a light) to the battery. Use insulated 16- or 18-gauge wiring, colored black, for the ground wires. Measure the distances for the wires you'll need and cut them to length with wire cutters.

Step 2

Cut your power wires to length. You'll need two power wires. The first power wire must be long enough to reach from the power source (usually a battery) to the "acc" connection on the switch. The second power wire must be long enough to reach from what you're powering (like a light) to the "power" connection on the switch. Use insulated 16- or 18-gauge wiring, colored red, for the ground wires. Measure the distances for the wires you'll need and cut them to length with wire cutters.

Step 3

Strip 1/2 inch of insulation from both ends of each wire you've cut to length.

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Wiring schematic

Connect your first power wire from the terminal of what you're powering to the switch's "power" connection. In most cases, the switch and other device will have tabs with small holes in them. Push the bare end of the wire through the hole in the tab, bend it back and cover with a small piece of electrical tape or solder.

Step 5

Connect the second power wire from the "acc" connection of the switch to the battery. Use the method described in Step 4 for the switch connection.

Step 6

Connect your first ground wire from the terminal of what you're powering to the switch's "gnd" connection. In most cases, the switch and other device will have tabs with small holes in them. Push the bare end of the wire through the hole in the tab, bend it back and cover with a small piece of electrical tape or solder.

Step 7

Connect the second power wire from the "gnd" connection of the switch to the battery. Use the method described in Step 4 for the switch connection.