3 Way Light Switch Wiring Schematic. The black and red wires between sw1 and sw2 are connected to the traveler terminals. 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.
You can observe how the schematic look of 3 way light switch. 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. The black hot wire connects to the far right switch s common terminal.
The white wire becomes the energized switch leg as indicated by using black or red electrical tape.
Wiring diagrams for 3 way switches 3 way switch diagram 2 above shows the electricity source starting at the fixture. The white wire becomes the energized switch leg as indicated by using black or red electrical tape. So what you should see if you have correct 3 wire electrical cable romex is a black power white neutral and now a 3rd red wire. In the 1st diagram below a 2 wire nm cable supplies power from the panel to the first switch box.
