Electrical wiring diagrams for 3 way light switches are an important part of home wiring systems because they show the different ways to do home lighting controls from different locations. It also works for ceiling fans and electrical outlets controlled by two locations. Home cabling for lights is easier to understand if you have a good image to look at. Be sure to make sure all circuits are turned off before you start any work on electrical systems.
A picture is worth a thousand words, but this pic is kind of fuzzy, so here’s the thousand words:
Ok, did you get all that? 3-way switches are a little confusing at first, but once you do a couple of switches, you’ll get a feel for it. There are a few different ways to
wire 3-way switches,
but at first, just pick one method and use that to keep from getting overwhelmed. 4-way switches are a little more complicated, but as I say in other parts of this site, a 4-way switch always lies between 2 three-way switches.