How To Connect 3 Way Switch. Before proceeding, make sure you are comfortable working with. Follow Dominick as he shows you step by step how to get it right.
Likewise you should confirm the white (neutral). Three-way switches have different methods of connection, depending on the brand of the switch. It has a Common (Black) and two travelers (Red Connect the black wire from the marked POWER cable to the Line terminal on the relay switch.
On the power coming in from the panel, you would connect that black wire to the one black screw.
Three-way switches make it easy to control the same light from multiple rooms.
Three way is one light with three switches. While fishing the wires can be a laborious task, making the proper connections is often more confusing so lets take a closer look at the two new switches. In a three-way switch, the top terminal connects to one or the other of the bottom two terminals.
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