3 Way Switch Wiring Diagram. Wiring diagrams for 3 way switches. The diagram below will give you a good understanding of what this wiring consists of.
The red wire which is connected to the first switch s. When wiring a 3 way switch circuit we will be using a 3 wire cable known as romex coming from the source such as the breaker box. A 3 way switch wiring diagram is a simple drawing showing how to connect the wires to each of the four screws on the 3 way switch.
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.
3 way switch wiring diagram. The diagram below is based on the video you watched above. The red wire which is connected to the first switch s. With these diagrams below it will take the guess work out of wiring.