4 Way Switch Wiring Diagram 2 Lights. A 3 wire nm connects the traveler terminals of the last 4 way switch and the second 3 way switch. In the diagrams below the first switch 3 way common terminal connects to line voltage.
Three wire cable runs between the switches and the outlet. This circuit diagram shows wiring for a 4 way circuit with the power source at the light fixture and the switches following. In the diagram above splices are made and a three conductor cable is installed between all the switches.
A 4 way switch is always placed in between two 3 way switches.
The other pair of the second switch 4 way travelers connect to one pair of the third switch 4 way travelers. The other pair of the second switch 4 way travelers connect to one pair of the third switch 4 way travelers. Each pair of traveler terminals should be wired to the traveler wires from one of the 3 way switches in the circuit. To view it at full size click on the diagram.
