On A 3-way, there’s an extra terminal, called the “common.” Power comes in to the switch within the widespread, then two “traveler” wires hook up the main switch to the 2nd over the brass terminals. ” Insert the transmitter into a receptacle or light socket, and sweep the receiver above https://wiring-systems40986.link4blogs.com/56015157/not-known-facts-about-wiring-to-lights