4 Way Switch Wiring Diagrams
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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
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.
See more about Home Wiring for Maryland
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
- Fully explained 4 way switch diagrams. 4-way switches are a convenient way to operate lighting fixtures from three or more locations.
- The electrical wiring adds additional wiring to the same principles of 3-way switching.
Electrical wire
- Electrical Wire for the Home
- Complete listing of electrical wire types and parts used for home projects with electrical code information serves as selection guidelines.
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You Can Avoid Costly Mistakes!
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Here's How to Do It:
Wire It Right with the help of my Illustrated Wiring Book
Great for any Home Wiring Project.
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Perfect for Homeowners, Students,
Handyman, Handywomen, and Electricians
Includes:
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.
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Be Careful and Be Safe - Never Work on Energized Circuits!
Consult your Local Building Department about Permits and Inspections for all Electric Wiring Projects.
Electrical Tips to Help You Wire it Right
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The Safest Way to Test Electrical Devices and Identify Electric Wires!
The Non-Contact Electrical Tester
This is a testing tool that I have had in my personal electrical tool pouch for years, and is the first test tool I grab to help identify electrical wiring. It is a Non-contact tester that I use to easily Detect Voltage in Cables, Cords, Circuit Breakers, Lighting Fixtures, Switches, Outlets and Wires. Simply insert the end of the tester into an outlet, lamp socket, or hold the end of the tester against the wire you wish to test. Very handy and easy to use. |
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The Quickest Way to Check for Faulty Electrical Wiring!
The Plug-In Outlet Tester
This is the first tool I grab to troubleshoot a problem with outlet circuit wiring. This popular tester is also used by most inspectors to test for power and check the polarity of circuit wiring.
It detects probable improper wiring conditions in standard 110-125 VAC outlets
Provides 6 probable wiring conditions that are quick and easy to read for ultimate efficiency
Lights indicate if wiring is correct and indicator light chart is included
Tests standard 3-wire outlets
UL Listed
Light indicates if wiring is incorrect
Very handy and easy to use. |
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Strip Off Wire Insulation without Nicking and Damaging the Electric Wire!
The Wire Stripper and Wire Cutter
My absolute favorite wire stripping tool that I have had in my personal electrical tool pouch for years, and this is the tool I use to safely strip electrical wires.
This handy tool has multiple uses:
The wire gauges are shown on the side of the tool so you know which slot to use for stripping insulation.
The end of the tool can be used to grip and bend wire which is handy for attaching wire onto the screw terminals of switches and outlets..
The wire stripper will work on both solid and stranded wire. This tool is Very Handy and Easy to Use. |
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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?
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,
Dave