How to Wire a 4 Way Switch

Hey there, DIY enthusiasts! Are you looking to upgrade your home’s lighting system? One of the most significant improvements you can make is by installing a four-way switch. This type of switch allows you to control a single light fixture from three or more locations, making it a great addition to larger areas like living rooms and hallways. In this article, we’ll guide you through the step-by-step process of wiring a four-way switch.

What You’ll Need

Before we dive into the wiring process, it’s important to gather all the necessary tools and materials. Here’s a list of what you’ll need:- Four-way switch- Three-way switch (two if you’re connecting only three locations)- Electrical tape- Wire stripper- Needle-nose pliers- Screwdriver- Electrical box- Electrical connectors- Electrical wire (black, red, white, and bare copper)

Step-by-Step Guide

Now that you have all the necessary tools and materials, it’s time to start wiring the four-way switch. Follow these steps carefully to ensure you complete the project safely and accurately.

Step 1: Turn Off the Power

The first and most crucial step when working with electrical wiring is to turn off the power. Locate the circuit breaker that controls the area where you’ll be working and turn it off. Test the wires using a voltage tester to make sure the power is off before you start working.

Step 2: Install the Electrical Boxes

Once the power is off, it’s time to install the electrical boxes where the switches will be located. Make sure you choose a location that is easy to access and away from any moisture or heat sources. Use the screwdriver to install the boxes securely.

Step 3: Connect the Wires to the First Three-Way Switch

Start by connecting the black wire from the power source to the black screw on the first three-way switch. Then, connect the white wire to the white screw and the bare copper wire to the ground screw. Finally, connect a red wire to the remaining screw.

Step 4: Connect the Wires to the Four-Way Switch

Now, it’s time to connect the wires to the four-way switch. Start by connecting the red wire from the first three-way switch to one of the brass-colored screws on the four-way switch. Then, connect another red wire to the remaining brass-colored screw. Finally, connect the black and white wires to the remaining two screws.

Step 5: Connect the Wires to the Second Three-Way Switch

Next, connect the red wire from the four-way switch to the remaining screw on the second three-way switch. Then, connect the black wire to the black screw, the white wire to the white screw, and the bare copper wire to the ground screw.

Step 6: Turn on the Power and Test the Switches

Once you’ve connected all the wires to the switches, it’s time to turn on the power and test the switches. If everything works correctly, you’ll be able to control the light fixture from all three locations.


– Before you start wiring, make sure you understand the wiring diagram and have a clear plan of how you’re going to connect the wires.- Always turn off the power and test the wires with a voltage tester before you begin working.- Label the wires as you remove them from the old switches to make it easier to connect them to the new switches.- Use electrical tape to wrap the wire nuts for extra safety.- If you’re not comfortable working with electrical wiring, consider hiring a professional electrician to do the job.


Wiring a four-way switch may seem daunting at first, but with the right tools and a little patience, it can be a simple and rewarding DIY project. Follow the steps outlined in this article carefully, and don’t forget to turn off the power before you begin working. With a little know-how and the right tools, you’ll be able to enjoy the convenience and functionality of a four-way switch in no time.Thanks for reading! We hope you found this article informative and helpful. See you in our next exciting article!