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4 Way Switch Wiring Diagrams

How to Wire 4 Way Switches with Easy to Understand Wiring Diagrams – Fully explained 4 way switch diagrams. 4-way switches are a convenient way to operate lighting fixtures from three or more locations.

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How to Wire 4 Way Switches
[ad#block]Electrical Question: How do I wire a 4 way switch source to a 3 way switch with the light from the 4 way switch?

This electrical wiring question came from: Mike, a Homeowner from Arnold, Maryland.
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Dave’s Reply:
Thanks for your electrical wiring question Mike.

How to Wire 4 Way Switches with Easy to Understand Wiring Diagrams

Skill Level: Intermediate to Advanced.
Tools Required: Basic Electricians Pouch Hand Tools and Voltage Tester.
Estimated Time: Depends on personal level experience and ability to work with tools.
Precaution: Identify the circuit, turn it OFF and  Tag it with a Note before working with the wiring.

4 Way Switch Wiring
4 Way Switch Wiring

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Complete Guide to Home Electrical Wiring

Perfect for Homeowners, Students,
Handyman, Handy Women, and Electricians
Wiring GFCI Outlets
Wiring Home Electric Circuits
120 Volt and 240 Volt Outlet Circuits
Wiring Light Switches
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
NEC Codes for Home Electrical Wiring
....and much more.

Be Careful and Be Safe - Never Work on Energized Circuits!
Consult your Local Building Department about Permits and Inspections for all Electric Wiring Projects.

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FAQs Frequently Asked Questions and Comments

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

    I have a 4 way switch with power coming into the first switch, then it sends power to a 3wire up to light fixture, then it is going to next light, and down to next light which is also on the 4 way switch with a 3wire that goes to next switch. When I turn the lights on, one is not working and one light is dim. Can you help me please?

  2. Dave Rongey says:

    Hi Andy,
    If a fixture light is dim this usually means that the switch wiring is incorrect and the light circuit is creating a voltage feedback, or there is another problem with the electrical system of the home. There are several methods of wiring a 4way switch in conjunction with 3way switches. I would suggest examining the 4way wiring diagrams which you may access from the links provided in the article above which may help you correct the 4way switch and light fixture wiring configurations.
    I hope this helps,