How to Add a 3 Way Switch To an Existing Single Switch Location
The Home Improvement Channel The Home Improvement Channel
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 Published On Jun 15, 2023

In this video tutorial I show how to add a 2nd switch location to a single pole switch. It's a pretty easy connection, but you will have to run a 12/3 or 14/3 to the 2nd location depending on what size breaker is on your circuit. I am only showing the hookup not the actual routing of wire since all houses are going to be different. Here are some videos I did a while back to show some routing options:

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