Eaton Three Way Switch Diagram. This 3 way light switch wiring diagram shows how to do the light switch wiring and the light when the power is coming to the light fixture. The white wire becomes the energized switch leg as indicated by using black or red electrical tape.
With these diagrams below it will take the guess work out of wiring. In the ceiling light fixture electrical box one black wire from a 3 way switch gets connected to the black load wire on the light fixture. Diagram 3 above shows the electricity source starting at the right 3 way.
Red and blue wires link traveler terminals of both switches.
Red and blue wires link traveler terminals of both switches. In this diagram power enters the fixture box. In the ceiling light fixture electrical box one black wire from a 3 way switch gets connected to the black load wire on the light fixture. 3 way switch wiring diagram.
