Wiring Diagram For 3 Way Switches That Work Independently. Three-way light switches are ideal when you need to control lights from two locations. They are always installed in pairs and use special wiring connections.
Use a tester to verify Bundle the three same-colored wires together and uses wire-cutters to trim the ends to an even length.
The three-way switch is a variation of the standard single-pole switch, which controls a light only from one location.
Single pole double throw (SPDT) is a switch that makes or breaks the connection of. Three-way light switches control a light from two locations, such as from both ends of a staircase or hallway. A three-way switch has three terminals, and the switch connects the first terminal to either the second or the third terminal, as shown here In this diagram, a normal piece of wire comes from the fuse panel to the first three-way switch.