Three Way Switch Wiring Diagram. Regardless of what 3 way switch wiring diagram you re following you ll need to use a 3 wire cable to connect the two 3 way light switches. 3 way switch wiring with.
The red wire which is connected to the first switch s. At each switch in the above 3 way switch wiring diagram the black wire gets connected to the common copper or black screw. This is the 3 wire cable which you must have to wire a 3 way.
The white wire of the cable going to the switch is attached to the black line in the fixture box using a wire nut.
Red and blue wires link traveler terminals of both switches. Three way switch wiring with light middle. Wiring diagrams for 3 way switches 3 way switch diagram 2 above shows the electricity source starting at the fixture. The white wire of the cable going to the switch is attached to the black line in the fixture box using a wire nut.
