Introduction: Four-Way Switches & How They Work

This is the second of my series of tutorials on switches. My first was Three-Way Switches & How They Work
Three-Way switches are used anytime a person wants to control a light from two different locations.  For example a hallway may have a switch at both ends for controlling the hall light.

But when a person wants to control a light from more than two locations then four-ways are needed.  These tutorials are more into explaining how the switches work rather than how to wire them. There are many other tutorials already existing on wiring them.  This video was created with the hope that after watching this one, the other tutorials will be easier to comprehend and a person will have a better chance in troubleshooting their circuits.


Vincent Cable (author)2015-08-27

Amazing & simple explanation of what seemed a difficult switch (4 way) to understand..
Your traveller wires in diagram & youtube explanation, made it so simple to grasp & understand.
Thank you very much my friend.
A valueable inside Phil.!!

wirenut1980 (author)2012-09-22

Awesome! Best explanation with demo I have ever seen, Thank you!

rimar2000 (author)2012-09-20

These (both instructables) are very useful info, thanks for sharing.

About This Instructable




Bio: Linux user. Started out in 1979 with a TRS-80 with only 4K of RAM. Then went onto CP/M then DOS and after that Windows ... More »
More by Ongytenes:How to Voice Type in LinuxBirds on a Wire - Electricity: Facts & MythsFour-Way Switches & How They Work
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