Wiring A 4 Way Switch. Turn off electric power. Turn off the circuit breaker that powers the circuit to which you will be wiring the four way switch.
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There are 4 places to terminate wire plus a green screw at the top of the. If the device is still. The black line wire connects to the common terminal of the first 3 way switch.
One ground and 4 circuit terminals divided into two matching pairs called travelers.
Back side of 4 way switch. Turn off the circuit breaker that powers the circuit to which you will be wiring the four way switch. A 4 way switch wiring diagram is the clearest and easiest way to wire that pesky 4 way switch. Back side of 4 way switch.
