3 Way Electrical Circuit Diagram. Diagram 1 above shows the electricity source starting at the left 3 way switch. Electrically a typical 3 way switch is a single pole double throw spdt switch.
In the 1st diagram below a 2 wire nm cable supplies power from the panel to the first switch box. 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 black hot wire connects to the far right switch s common terminal.
3 way switch diagram 2 above shows the electricity source starting at the fixture.
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. The first step in any electrical project is to make sure there is no power going to the circuit you plan to be working on. Wiring diagram 3 way switch with light at the end in this diagram the electrical source is at the first switch and the light is located at the end of the circuit.
