4 Way Circuit Diagram. 4 way switch wiring with light first. This diagram is a thumbnail.
To view it at full size click on the diagram. The 4 way is used when you want to control the light or lights from two or more locations. Two wire cable is run from the light to sw1 and 3 wire cable runs between the three switches.
This diagram illustrates wiring for a 4 way circuit with the electrical source at the light fixture and the switches coming after.
The 4 way is used when you want to control the light or lights from two or more locations. Two wire cable is run from the light to sw1 and 3 wire cable runs between the three switches. This diagram is a thumbnail. For complete instructions on wiring a basic 4 way switch see our wiring a 4 way switch article.
