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How do you wire a 3-way light switch?
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Wiring a 3-way light switch is relatively simple. Start by turning off the power to the switch, then turn on the circuit for the lights that are controlled by the switch. Next, connect the black wires from the switch to the black wire in the lighting fixture. Then connect the white wires from the switch to the white wire in the lighting fixture. Finally, connect the bare copper ground wire from the switch to the metal box or fixture.