A Diagram For Wiring 3 Way Switch And 4 Way. The diagram explains that the power source is coming in from the left. As many of you know, wiring a three-way switch with a pilot light is a tricky business - more I've been searching the internet for a wiring diagram that clearly shows how this needs to be done, but haven't come up with anything.
So what does this look like? [image] This is a diagram of a switch with the neutral run directly to the light.
Four-way switches are used any time when more than two switches are needed to control a light.
They are always installed in pairs and use special wiring connections. Three-way light switches control a light from two locations, such as from both ends of a staircase or hallway. The "back wire-able" option provided on some switches and outlets allows for simple insertion of a stripped wire into a hole for connection without.