How do you hook up a 4 way light switch

Tutorial: How 3-way and 4-way switch circuits work

Shown above is an animation of a circuit using three switches to control a light. The center switch is 4-way switch, while the outer two switches are 3-way. For a discussion of how to wire such circuits, see 3-way and 4-way light switches. That page and its links also discuss proper wire colors and several wiring alternatives. Note that in the above animation the wires are color coded to indicate their voltage state , not proper electrical code colors for their insulation.

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The paddle position determines which output is connected. This applies to both the dimmer and the 3-Way or 4-Way. If you change either the dimmer to output on the traveler or change the 3-way to connect to the load wire the light will go on. So to make a 4-Way you simply put a different type of switch in between the existing that will reverse the black and red wires.

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A 4-way switch is often used to control lights from three or more separate locations. However, it can also be used to control fans and ventilation systems from different locations, like in a large room like a living room. So, how do you wire a 4-way switch?

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What Is a 4-Way Switch? How It Works

This page describes how to use 3-way and 4-way switches to control lights from two or more locations. This is the first of several related pages explaining how to control lights with multiple switches. Click here for an overview of all these pages. A light or lights can be controlled by more than one switch.

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