Wiring Diagram For 3 Way And 4 Way Switches. A 4 way switch has five terminals. A 4 way switch must be wired between two 3 way switches as shown in the diagrams on this page.
One ground and 4 circuit terminals divided into two matching pairs called travelers. A 4 way switch is always placed in between two 3 way switches. Each pair of traveler terminals should be wired to the traveler wires from one of the 3 way switches in the circuit.
They all must be between the two 3 way switches.
If you understand how to wire a 3 way switch you ll have no issues with a 4 way switch. One ground and 4 circuit terminals divided into two matching pairs called travelers. Wiring diagrams for 3 way switches. You can have an indefinite number of 4 way switches in a circuit.
