Tip & How-To about Heating & Cooling

Wiring 4 Way Switch Diagram 4 Way Switch Wiring Diagram

For many people wiring a 4 way switch is quite confusing. Actually with a little help it really is not that hard.

The first thing that you want to remember is that you need to label every wire carefully as you install them. I often will make myself a drawing and number each connection. Then as I install each wire I can number that connection on the wire and keep track of everything that way. It will also help you if you need to troubleshoot your project at a later time.

Notice also that both blacks and both red wires are on the same side of the switch. Do not get them crossed.

Also if you are controlling more than one light, you can not just feed through one light to the next. You need to run a black and a white from each light to the next one. You can keep doing that with many lights as long as you do not overload the circuit.

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1 Answer

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1 Answer

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1 Answer

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