3 Way Switch Wiring Diagram - easy-do-it-yourself-home 3 Way Switch Wiring Diagram. Take a closer look at a 3 way switch wiring diagram. Pick the diagram that is most like the scenario you are in and see if you can wire your switch! This might seem intimidating, but it does not have to be. With these diagrams below it will take the guess work out of wiring. Several 3-Way Switch Wiring Methods | Mr. Electrician 3-Way Switch Wiring Diagram with LINE and LOAD in the Same Switch Box. The white wire must be re-identified as a hot wire at each switch location. The white wire between switches is not being used as a neutral. An example of three-way switch wiring with the LINE 3-Way Switch Wiring Diagram Variation #3 : Electrical Online Wiring diagram for a 3-way switch, one of the many wiring diagrams showing different methods of wiring a three way switch circuit. This electrical wiring diagram shows power into light switch Box #1 – wire to light from switch box #1, and from switch box #1 to three-way light switch box #2.