3 Gang Switch Schematic Diagram. Two very old three way switches are depicted in the photo above. Take a closer look at a 3 way switch wiring diagram.
Each of the gangs or switches above in fig 2 of which there are three work like this fig 3. The black and red wires between sw1 and sw2 are connected to the traveler terminals. In this updated diagram 3 wire cable runs between the receptacle and switch and the red cable wire is used to carry the hot source to the switch.
The neutral from the source is spliced through to the switch box using the white wire and in this diagram the white wire is capped with a wire nut.
Wiring a 3 way light switch is certainly more complicated than that of the more common single pole switch but you can figure it out if you follow our 3 way switch wiring diagram. Each of the gangs or switches above in fig 2 of which there are three work like this fig 3. In position 1 when the switch is down or on com and l1 are connected together just like the one way switch in position 2 when the switch is up or off com and l2 are connected together. With these diagrams below it will take the guess work out of wiring.
