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Electrical Wire and Cable

How to Solve Light Fixture and Switch Wiring Problems

How do I fix a problem with a light that I am trying to install? Wiring Connections for Light Fixtures and Switches.

Electrical Wiring Video

How to Wire a GFCI Outlet without a Ground Wire

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Wiring Light Fixtures and Switches
Electrical Question: How do I fix a problem with a light I am trying to install?

Not sure what to try next, any help would be greatly appreciated!

This electrical wiring question came from: Andy, a Student in New York.

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

How to Wire Light Switches and Occupancy Sensors


Application: Troubleshooting and Testing Light Switch Wiring.
Skill Level: Intermediate to Advanced. This electrical project is best performed by a licensed electrical contractor.
Tools Required: Basic Electricians Pouch Hand Tools and a Voltage Tester.
Estimated Time: Depends on personal level experience, ability to work with hand tools and electrical troubleshooting skills.
Precaution: Identify the circuit, turn it OFF and then Tag it with a Note before performing any wiring or inspections.

Wiring Connections for Light Fixtures and Switches

More about Wiring Light Fixtures and Light Switches

Light Switch Wiring
Light Switch Wiring
Wiring a Light Switch – Diagram 1
Fully explained pictures and wiring diagrams about wiring light switches describing the most common switches starting with photo diagram 1.

Home lighting
recessed lighting
Home Lighting Articles
Home Lighting Articles covering recessed lighting, under cabinet lighting, lighting terminology and more.

How to Install Kitchen Electrical Wiring
Kitchen Electrical Wiring
Fully Explained Photos and Wiring Diagrams for Kitchen Electrical Wiring with Code Requirements for most new or remodel projects.

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Basic Home Electrical Wiring by Example

Dave's Guide to Home Electrical Wiring:

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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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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.

More articles about Electrical Wiring, Light Switch Wiring and Home Electrical Wiring:
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FAQs Frequently Asked Questions and Comments

2 Responses to “How to Solve Light Fixture and Switch Wiring Problems”
  1. Quel32 says:

    I am trying to install a ceiling fan with a light. I have 4 wire bundles which are for the outside light, inside light, and a dimmer switch. In the ceiling there are 4 black, 4 white, 4 bare wires how do I connect 2 black have power?

  2. Dave Rongey says:

    Hi Quel32,
    When there are several cables and wires we typically use a voltage tester to identify the wiring. Keep in mind that the wiring may be used for the following purpose: The incoming power source, wiring to or from a wall switch, and wiring leading to the other light fixtures or outlets in the general area. In some cases when the wiring configuration is unknown it is helpful to use a continuity tester with the circuit power turned off. This will help us to help identify lights, switches, wall outlets, and other electrical devices which may be connected to the junction box wiring.
    Thank you for sharing your electrical question with us,