3 Way Switch Staircase Wiring Diagram. These diagrams illustrate how to wire a pair of three-way light switches in three different situations. They are always installed in pairs and use special wiring connections.
Depending on the current setup and the fixture you're wiring the switch into, you may also need some additional wire nuts to create secure connections to your home's existing wiring. Three-way wall switches control a light fixture from two locations in a room. You can put your lights on a dimmer switch in no time.
There are several possibilities depending on where the power source enters the circuit.
Three-way wall switches control a light fixture from two locations in a room.
With a few tools and your handy wiring diagram, you can add a custom lighting solution to any room in your house. Three-way switch wiring requires the use of a three-conductor cable to connect the two switches. The three-way switch is a variation of the standard single-pole switch, which controls a light only from one location.