How to Run Power to Under Cabinet Lights: A Step-by-Step Guide

Under cabinet lighting is a great addition to any kitchen or workspace, as it provides valuable task lighting while also adding a touch of style to the room. However, installing under cabinet lights can be a bit tricky if you’re not familiar with electrical wiring. In this guide, we’ll walk you through the steps of running power to under cabinet lights, so you can enjoy the benefits of this type of lighting in your home.

Gather Your Tools and Materials

Before you begin, it’s important to gather all the necessary tools and materials for the job. Here’s what you’ll need:

Under cabinet lights: Make sure you choose lights that are specifically designed for under cabinet use. These typically come in LED strips or individual puck lights.

Power source: You’ll need a power source for your lights, such as a wall outlet or a junction box.

Cable: You’ll need cable to connect the lights to the power source. Use UL-listed, 18-gauge cable.

Wire strippers: You’ll need wire strippers to remove the insulation from the cable.

Screwdriver: You’ll need a screwdriver to attach the lights to the underside of the cabinets.

Plan the Layout of Your under cabinet Lights

Once you have your tools and materials, the next step is to plan the layout of your lights. Here are a few tips to keep in mind:

Determine the best placement for your lights: Under cabinet lights can be placed in a variety of positions, depending on your needs. Consider whether you want the lights to be hidden from view, or if you prefer a more visible look. Also, think about the tasks you’ll be performing under the cabinets, and position the lights accordingly.

Measure the length of cable you’ll need: Measure the distance between the power source and the location of each light, as well as the total length of cable you’ll need. Add a few extra inches to each measurement to be safe.

Decide where to mount the power source: If you’re using a wall outlet as your power source, make sure it’s located in a convenient spot. If you’re using a junction box, you’ll need to decide where to mount it, and whether it will be visible or hidden.

Connect the under cabinet Lights to the Power Source

With your tools, materials, and layout plan in hand, you’re ready to start connecting the lights to the power source. Here are the steps to follow:

Step 1: Turn off the power: Before you start working with any electrical wiring, make sure the power is turned off to the area where you’ll be working. If you’re not sure which breaker to turn off, turn off the main breaker to be safe.

Step 2: Install the power source: If you’re using a wall outlet, plug in the power adapter and run the cable to the first light. If you’re using a junction box, mount it in the chosen location and run the cable to the first light.

Step 3: Install the lights: Using the screwdriver, attach the lights to the underside of the cabinets, following the manufacturer’s instructions. Make sure the lights are positioned correctly, and that the cable is routed neatly.

Step 4: Connect the cable: Using the wire strippers, remove the insulation from the ends of the cable. Connect one end of the cable to the power source, and the other end to the first light. Repeat this process for each light.

Step 5: Turn on the power: Once all the lights are connected, turn the power back on and test the lights to make sure they’re working properly.


Running power to under cabinet lights can be a simple! Now follow my guideline and try it!

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