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How to Wire a Three Way Switch to a Existing Single Pole Light Switch Circuit.

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4.1/5 - (23 votes)

3way-switchPin

In this video, I explain just how easy it is to add a three-way switch to an existing single pole (one) switch lighting circuit. Now if you are trying to install a completely new 3-way circuit please my video with an article on how to install a three-way.  Otherwise, this may confuse you a little.

Even if you hire an electrician to do the job for you. You can still save a few bucks by installing the wire yourself. I mean that’s the hardest part of this.

The hardest part will be running the 4 wire from the existing switch to the new one. Take a look at my video and ask any questions if you need help.

Three way switch wiringPin
Three way switch wiring
How to install a three way switch to a existing one way switch
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Comments ( 11 )

  1. A wiring diagram for this “how to” would be extremely helpful.
    Thanks

  2. Thanks, A wiring diagram is great lesson :)

  3. I have a 3way line from switch to light, but only one switch how can I hook the light up to work. Don’t know what to do with the red line

  4. I have a single switch controlling a lite direct, power source is through the switch, how do I tie the 14/3 I have ran for 2nd switch location to where no need for rerouting the wire to the lite from second switch?

  5. Thank you

  6. Thank You, that was nice and simple, gave me everything I needed.

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