Ceiling Fan Dimmer Switch Wiring

By Dave Rongey - Summary:

How to Fix a Dimmer Switch Wiring Problem: I tried to replace a ceiling fan dimmer switch but now it trips the circuit breaker.

Dimmer Switch Wiring and Ceiling Fans

Electrical Question: I tried to replace a ceiling fan dimmer switch but now it trips the circuit breaker.

  • I removed a ceiling fan and replaced with a new light fixture.
  • During the event I removed a dual pole switch and dimmer switch which were attached to the original fan thinking I could replace that with a dimmer switch only.
  • One other problem is there is a second switch on an opposite wall.
  • I hooked this up as I thought it was originally but now when I turn on power the light is on but one switch does nothing and the second blows the breaker.
  • I am sure I have messed this up but could sure use some help.

This electrical wiring question came from: Robert, a Homeowner from Bloomsburg, Pennsylvania.

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

How to Fix a Dimmer Switch Wiring Problem


Application: Wiring a Ceiling Fan or Light Fixture Dimmer Switch.
Skill Level: Beginner to Intermediate – Best performed by a Licensed Electrician.
Tools Required: Basic Electricians Pouch Hand Tools and Voltage Tester.
Estimated Time: Depends on personal level experience and ability to work with tools and electrical wiring.
Precaution: Identify the ceiling fan power source or circuit at the panel, turn it OFF and Tag it with a Note before working with the switch wiring.
Materials: Make sure the switches are fully compatible with the ceiling fan you have and the size of the lamps that will be installed in the fixture.

Wiring a Replacement Dimmer Switch


  • If a rewired switch is causing a circuit breaker to trip there is most likely a dead short between a neutral and hot wire, a dead short on the wire to the light fixture, or two separate circuits are wired to the same light switch.


  • When rewiring a switch box where there are more than one light switch there may be more than one circuit that supplies power to one or more of the light switches.


  • Identify all of the circuits preferably before removing the existing light switches.
  • Use a voltage tester to identify the circuits supplying power to the light switches.


  • When replacing light switches do not disturb other wiring groups that are spliced together, especially white neutral wires.
  • You may notice white wires that are connected to a switch, however these are not neutral wires, but rather white wires that are being used for the switch configuration.
  • Please see the wiring diagrams as listed below for a visual understanding.

More about wiring a ceiling fan and dimmer switch

  • 3 Way Dimmer Switch Wiring Diagram
  • Fully explained 3 way dimmer switch wiring diagram will take the mystery out of wiring a 3-way dimmer switch.

Wiring Ceiling Fans

  • How to Install a Dimmer Switch on a Ceiling Fan

  • Take the mystery out of ceiling fan wiring.
  • Ceiling Fans are a great way to lower your energy bill and brighten up one of your favorite rooms.


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One Response to “Ceiling Fan Dimmer Switch Wiring”
  1. mukesh says:

    Sir, I want a electric diagram for 2 lights and 1 fan.


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