Electrical Three Way Switch Wiring Diagram. The white wire becomes the energized switch leg as indicated by using black or red electrical tape. Pick the diagram that is most like the scenario you are in and see if you can wire your switch.
The two hot wires of three wire cable connect to a pair of brass colored traveler terminals on each switch. The white wire becomes the energized switch leg as indicated by using black or red electrical tape. Three wire cable runs between the switches and 2 wire cable runs to the light.
Three wire cable runs between the switches and 2 wire cable runs to the light.
This wire diagram shows the wiring for source power into the first three way switch then 3 wire cable to the next 3 way light switch and then on to the light or light fixtures. 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. The two hot wires of three wire cable connect to a pair of brass colored traveler terminals on each switch. Knowing how to wire a three way lighting switch comes down to understanding the operation of this contraption.
