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Electrical Wire and Cable

4 Way Switch Wiring Diagrams

How to Wire 4-Way Switches: Here are some fully explained 4 way switch diagrams. 4-way switches are a convenient way to operate lighting fixtures from three or more locations.


Wiring a 4-Way Switch

Electrical Question: I have should have three switches that control the four can lights in the ceiling of my upstairs hallway.

Background: Karen, a Homeowner from San Diego, CA

Dave’s Reply:
Thanks for your electrical wiring question Karen.

How to Wire 4-Way Switches

How to connect the wires 4-way switch wires so that all three switches control the lights at all time

4 Way Switch Wiring
4 Way Switch Wiring
4 Way Switch Wiring

The links below take you to full wiring diagrams with instructions that will help you identify the wiring method used in your home and assist you to wire your 4-way switch.

For more information about 4 Way Switch Wiring:

The Following links will assist you with 4-way switches

Light Switch Wiring
Wiring Diagrams

3 Way Switch Diagram
3 Way Switch Diagram

3 Way Switch Wiring Diagram, Helpful for Wiring 4-Way Switches which are wired with 3-Way Switches.

In response to the requests for this information, I have developed a comprehensive,step-by-step guide designed to walk you through the identification and wiring of your 3-way switches.



Learn How to Wire it Right with my
Complete Guide to Home Electrical Wiring
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Wiring Home Electrical Circuits
120 Volt and 240 Volt Outlet Circuits
Wiring 3-Wire and 4-Wire Electric Range
Wiring 3-Wire and 4-Wire Dryer Cord and Dryer Outlet
How to Troubleshoot and Repair Electrical Wiring
Wiring Methods for Upgrading Electrical Wiring
Electrical Codes for Home Electrical Wiring
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MORE ABOUT THIS TOPIC: 4-Way Switch, Lighting

FAQs Frequently Asked Questions and Comments

2 Responses to “4 Way Switch Wiring Diagrams”
  1. Jerry says:

    In your diagram of the 4 way switch, the wiring on my left 3 way switch is the same, but the right 3 way switch has the blacks on the same side and the red on the other. Will this matter?
    FYI, I have the same wiring problem as Karen described.

    • Dave Rongey says:

      Jerry,
      As you may know, a 4-way switch is wired with or between two 3-way switches, and 3-way switches can be wired several ways, I have identified eight ways three ways switches can be wired depending on the application. The key to wiring 3-way switches and the four way switches, is to identify where the power source enters the switching circuit. This is described in the wiring diagrams, and I have prepared a helpful guide which explains this due to a lot of misunderstanding.
      Dave

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