3 Way Switch Wiring Diagram 4 Lights. Three-way light switches control a light from two locations, such as from both ends of a staircase or hallway. 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.
Three-way switches allow for controlling a light fixture from two separate locations, these are usually used at the top and bottom of a flight of stairs or at two different entrances to a room. Three-way wall switches control a light fixture from two locations in a room. Four-way switches are used any time when more than two switches are needed to control a light.
Four-way switches are used any time when more than two switches are needed to control a light.
Ground connection is not shown in these diagrams.
I picked up a lot of good advice from various posts - enough to put together a wiring diagram. Read reviews from world's largest community for readers. They are always installed in pairs and use special wiring connections.
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