4 Wire Switch Connection. If there is a grounding terminal now simply hook the black wire to the bottom terminal and the white wire to the top terminal. This is an updated version of the first arrangement.
A 4 way switch wiring diagram is the clearest and easiest way to wire that pesky 4 way switch. Step 1 turn off the power. The red and white are used as travelers between the 4 way and sw2.
Restore power to the switches at the circuit breaker box.
Restore power to the switches at the circuit breaker box. Wiring diagrams show the hook up offour sensors with npn and pnp outputs. The red and black are used for hot and the white neutral wire at the switch box allows for powering a timer remote control or other programmable switch. This is an updated version of the first arrangement.
