How to Wire Garage Lights in Series

If you’re looking to wire your garage lights in series, there are a few things you need to know. This blog post will cover the basics of how to wire garage lights in series and provide some tips for getting the job done right. To wire garage lights in series, you must purchase a light switch and some wires.


The light switch can be mounted on the wall near the entrance to the garage, and the wire can be run between each light fixture. Once the wire is in place, you can attach it to the light fixtures and install the light bulbs.

Summary: How to Wire Garage Lights in Series is a practical guide that demonstrates the process of connecting multiple garage light fixtures in a series configuration. This method involves connecting each light fixture directly to the previous one, resulting in a single continuous electrical circuit. The guide outlines the advantages of wiring in series, such as simplified installation and easier troubleshooting, while also noting the drawbacks, such as reduced brightness and potential failure of all lights if one fails.

The guide provides a step-by-step walkthrough of the wiring process, beginning with the necessary preparations, such as gathering tools and materials, and turning off the power supply. It then explains how to connect the light fixtures by joining their wires, securing the connections with wire nuts, and attaching the fixtures to the ceiling or walls.

Finally, the guide emphasizes the importance of testing the installation to ensure proper functionality and safety. By following the instructions provided, homeowners can successfully wire garage lights in series and create efficient, reliable lighting for their garage spaces.

Why You Should Wire Garage Lights in Series?

There are a few reasons why you might want to wire your garage lights in series. One reason is that it can create a more uniform lighting scheme.

When all the light fixtures are connected in series, they will all be controlled by the same switch. This means you can turn them all on or off simultaneously, which is convenient.

Another reason to wire your garage lights in series is to save you money on your energy bill. When all the light fixtures are connected in series, they will each use less electricity.

This is because the electricity must travel through all the light fixtures before the switch. Therefore, you will use less electricity overall.

Wiring your garage lights in series can also make them more durable. If one light fixture goes out, the others will still be operational. This is because the electricity will continue to flow through the other fixtures even if one is not working.

So, if you are looking for a more durable lighting system, wiring your garage lights in series is a good option.

Now that you know some of the benefits of wiring your garage lights in series, let’s take a look at how to do it.

Step by Step Guide: How to Wire Garage Lights in Series

Step 1: Shut off the Main Power

Before beginning any electrical project, it is important to ensure the power is turned off. The main power to the house should be shut off before working on any wiring in the garage.


If your garage is attached to your home, the main breaker box for your home will be located in the garage. If your garage is a detached structure, there will likely be a separate breaker box for the garage.

Step 2: Install a Support Wire

To wire the lights in series, you must install a support wire between the two light fixtures. This support wire must be connected to each light fixture’s “hot” (live) terminal. The support wire can be connected to the light fixtures using wire nuts and short lengths of electrical wire.

Suppose you want to make your wiring installation look more professional. In that case, you can install plastic wire tubing to cover the support wire and the electrical connections at the light fixtures.

Step 3: Run Romex Wiring from the Breaker Box

Using Romex electrical wire, run a wiring length from the breaker box to the first light switch. Ensure enough wire at the breaker box to make the connections. Cut the Romex wire to length at the light switch box, leaving about six inches of extra wire.

Strip away about an inch of the sheathing from the end of the Romex wire using a utility knife. Using a wire stripper, strip away about 3/4 inch of the insulation from the end of the black and white wires.

Step 4: Make Connections at First Switch Box

Using a wire connector, join the black wire from the Romex cable to the black wire going to the first light. Join the white wire from the Romex cable to the white wire going to the first light.


Finally, join the ground wire from the Romex cable to the green or bare copper ground wire in the switch box. If your switch box doesn’t have a ground wire, you can attach a grounding pigtail to the switch box and connect it to the green or bare copper grounding wire in the Romex cable.

Step 5: Connect the Other Wires to the Fixtures

Now that you have your fixtures and wiring, it’s time to connect the other wires to the fixtures. Start by clicking the black wire from the power source to the black wire on the first fixture.

Then, connect the white wire from the power source to the white wire on the first fixture. Finally, connect the ground wire from the power source to the green or bare wire on the first fixture.

Step 6: Setup the Garage Lights

Once your power source and switches are wired up, it’s time to install the actual garage lights. If you’re using fluorescent tube lights, you’ll need to install the ballast first.

This small box sits outside the light fixture and contains the electronic components that power the tubes. Once the ballast is installed, screw in the tube light fixture and snap in the tubes.

LED lights are much easier to install. Simply screw the LED light fixture into an available socket. Ensure that the switch controlling the socket is turned off before doing this. Once the fixture is installed, check if the LED light works by turning on the switch.

Step 7: Test Your Connection

With all the connections made, it’s time to test your work. First, turn on the main power and then flip the switch controlling the first light. The garage lights should come on. If they don’t, check all the connections to ensure they are tight and secure.


Once you’ve confirmed that the connection is secure, try flipping the switch again. If everything works, you’ve successfully wired your garage lights in series! If the light still doesn’t come on, check the bulb to ensure that it’s screwed in tight and test again.

Wiring garage lights in series is a simple and effective way to get the most out of your garage lighting system. With this type of wiring, a single switch will control all the system’s lights.

This can be very convenient if you have a large garage or workshop. It also eliminates the need for multiple light switches, saving you money on your electric bill.

Some Helpful Tips and Suggestions:

Here we have given tips on how to wire garage lights in series simply and conveniently:

1. Make sure to turn off the power to your garage at the circuit breaker before beginning any wiring work.

2. If you are not comfortable working with electrical wiring, it is best to hire a professional electrician to do the job for you.

3. When running the wires from one light fixture to the next, make sure to leave enough slack so that you can easily make any necessary connections.

4. Use wire nuts to connect the wires at each connection point.

5. If you are running the wires through any type of metal conduit, properly ground the conduit by attaching a grounding wire to it.

6. Once all the wiring is complete, turn the power back on and test the lights to ensure they are working properly.

7. Make sure to keep all the wirings away from potential water or moisture sources to prevent any safety hazards.

By following these tips, you can easily wire your garage lights in series. This will provide you with ample light for working in your garage, and it will also help improve your home’s safety.

What Are the Disadvantages of Wiring Garage Lights in Series?

While wiring garage lights in series may be the easiest way to get them up and running, this method has some potential disadvantages. First, if one bulb burns out, the entire circuit will be disrupted, and all bulbs will go dark.


Secondly, wiring in series creates a single point of failure; if the connection between any two bulbs is disrupted, the entire circuit will fail. Finally, this method is not very flexible.

You must rewire the entire circuit if you want to add or remove a light bulb. If you are looking for a more reliable and flexible way to wire your garage lights, consider wiring them in parallel.

Parallel wiring ensures your lights stay on even if one bulb burns out, making adding or removing fixtures easier without having to rewire the entire system. But you don’t get the one switch convenience of series wiring. Instead, you’ll need individual switches for each light.

Safety Precautions and Advice:

1. Always disconnect the power to your garage lights before beginning any work on the wiring.

2. Be sure to use appropriate wire sizes for the current draw of your garage lights. Overloading a circuit with too much current can cause a fire.

3. Always use approved electrical boxes and fittings when working with electricity.

4. Make sure to consult an electrician or other qualified professional if you are unsure about any part of the process.

5. Use caution when working around live electrical circuits. You could be seriously injured or killed if the power is not disconnected.

6. Follow all local building codes and ordinances when installing electrical wiring.

Final Words

Garage lights can be wired in a series to increase the total wattage of the light fixture. In addition, wiring multiple light fixtures in a series can achieve the desired effect while using fewer outlets.

In this post, we’ve shown you how to wire garage lights in series and provided some tips for doing so safely. When wiring multiple light fixtures in a series, it’s important to remember that all bulbs must have the same wattage.

If bulbs of different wattages are used, the lower-wattage bulb will not function properly and may even cause damage to the other bulbs in the circuit. It’s also important to use caution when working with electricity.

Be sure to follow all safety precautions when wiring your garage lights. If you have any questions or concerns, please consult an electrician before attempting this project yourself.

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