3 Way Light Switch Wiring. Do this before you disconnect any wires from the switches. Install the correct electrical boxes.
A 3 way switch allows you to turn a light on or off from two different switches. Jan 24 18 02 26 pm. Want to turn a lamp on with a light switch.
A 3 wire nm connects the traveler terminals of the first and second 3 way switch together.
Connect the wire marked common to the black or dark colored screw. Wiring the switches 1. A 3 way switch allows you to turn a light on or off from two different switches. Turn the power off at circuit breaker.
