Under cabinet lighting can make a kitchen easier to work in without changing the cabinets, countertops, or main ceiling fixtures. It can illuminate dark preparation areas, reduce shadows, and create a more comfortable atmosphere when the main kitchen lights are turned down.

But installing under cabinet lighting is not just about attaching an LED strip beneath a cabinet. The light source needs to be positioned correctly, the power supply must be compatible, and the installation method should suit both the kitchen layout and the home's electrical setup.

In this guide, I'll explain how to install under cabinet lighting, how to choose between LED strips and linear fixtures, where to position the lights, and which installation mistakes to avoid. I'll also cover the difference between plug-in, low-voltage, and hardwired systems so you can choose an approach that fits your project.

Quick Answer: How Do You Install Under Cabinet Lighting?

For most straightforward kitchen upgrades, under cabinet lighting can be installed by measuring the cabinet run, choosing a compatible LED lighting system, positioning the fixture near the front underside of the cabinet, securing it according to the manufacturer's instructions, and testing the light before concealing the wiring.

The exact process depends on the fixture and power supply.

• Plug-in lighting: Connects to a suitable existing outlet and is often the simplest option for DIY projects.

• Low-voltage lighting: Uses a compatible driver or power supply to operate the lights at a lower voltage. The driver still needs an appropriate power source.

• Hardwired lighting: Connects to the home's electrical wiring and may require a qualified electrician, permits, or other code-compliant work depending on the installation and local requirements.

Before buying anything, decide where the light needs to fall, how the wiring will be routed, and whether you want a separate switch or dimmer. These decisions are easier to make before installation than after the lights are attached.

Why Is Under Cabinet Lighting Worth Installing?

Ceiling lights illuminate much of the kitchen, but they do not always provide enough light on the countertops. Upper cabinets can block light from reaching the work surface, especially when you stand between the ceiling fixture and the area where you're preparing food.

Under cabinet lighting places the light source closer to the task. It can help illuminate chopping boards, ingredients, small appliances, and other everyday work areas without requiring a brighter ceiling fixture.

It also adds another layer to the kitchen's overall lighting plan. For a broader look at combining ambient, task, and accent lighting, see the kitchen lighting guide.

The goal is not to make every surface equally bright. It is to direct useful light where you need it while keeping glare and distracting bright spots under control.

Step 1: Choose the Right Type of Under Cabinet Lighting

Before measuring or drilling, decide which kind of fixture works best for your cabinets, countertop, and electrical setup.

Lighting type	Best suited for	What to consider
LED strip lights	Long countertops and continuous illumination	Diffusion, mounting surface, power supply, and cut points
Linear LED fixtures	Defined countertop sections and a clean, finished appearance	Fixture length, mounting clips, and wire routing
Puck lights	Individual work areas or localized pools of light	Spacing, visible bright spots, and shadow gaps
Battery-powered lights	Small areas or installations where wiring is difficult	Battery replacement, charging, and ongoing maintenance

For long countertop runs, LED strips or linear fixtures can provide more continuous light than widely spaced puck lights. Puck lights may work well where you want separate pools of illumination, but the result depends on their beam angles and spacing.

When choosing an LED system, look beyond wattage. The U.S. Department of Energy explains the difference between electrical power and light output in its LED basics resource. Lumens describe the amount of light produced, while watts describe power consumption.

Also consider color temperature, dimming compatibility, and the way the light will look alongside your existing kitchen fixtures.

For a wider view of how different fixtures work together, LightsLux's modern kitchen lighting recommendations explain how task lighting can complement pendants and ceiling fixtures.

Step 2: Measure the Cabinets and Plan the Layout

Accurate measurements help prevent gaps, awkward wiring routes, and uneven illumination.

Start by measuring the underside of each upper cabinet where you want to install lighting. Measure each section separately, especially if the kitchen has corners, a range hood, a sink area, or cabinets of different widths.

Record the following:

• The length of each cabinet run.

• The position of cabinet joints and corners.

• The location of nearby outlets or existing power connections.

• Any obstructions, including hinges, cabinet supports, and trim.

• The location of the countertop work areas that need the most light.

Do not assume that the full length of the cabinet should automatically be covered by one continuous strip. Some areas may benefit from more focused light, while others may not need a fixture at all.

Where should under cabinet lights be positioned?

For many kitchens, positioning the fixture toward the front portion of the cabinet's underside helps direct light onto the countertop rather than leaving the work surface in shadow. The precise position depends on the fixture's beam angle, the cabinet depth, and the countertop layout.

Before attaching anything permanently, hold the light in its proposed position and test the beam on the countertop. Check whether the backsplash is excessively bright, whether the front edge of the counter is illuminated, and whether the fixture itself is visible from normal standing positions.

If you are also planning island or ceiling fixtures, review the kitchen island lighting recommendations so the different lighting layers work together rather than compete for attention.

Step 3: Gather the Tools and Materials

The exact materials depend on the product you choose. A typical low-voltage or plug-in LED installation may require:

• An appropriately sized LED strip or linear fixture.

• The manufacturer's compatible driver or power supply, if required.

• Mounting clips, brackets, or approved adhesive.

• A measuring tape and pencil.

• Scissors or a cutting tool approved for the product.

• Cable clips or a suitable wire-management system.

• A compatible switch or dimmer, if desired.

• A screwdriver or drill if the mounting method requires one.

Some LED strips have adhesive backing, while others require clips or channels. Do not assume that adhesive alone is suitable for every cabinet finish or surface condition.

Read the product instructions before cutting the strip, selecting a power supply, or choosing a dimmer. Some systems cannot be cut at arbitrary points, and components from different systems are not necessarily interchangeable.

A note on electrical safety

Before working on any existing electrical connections, follow the manufacturer's instructions and appropriate electrical safety procedures. For hardwired work, the Electrical Safety Foundation International's DIY electrical safety recommendations explain why homeowners should recognize the limits of their experience and seek qualified help when needed.

If the project involves opening electrical boxes, connecting line-voltage conductors, installing new wiring, or modifying a circuit, use a qualified electrician where required. Turning off a wall switch alone does not establish that wiring is safe to touch.

Step 4: Install Plug-In or Low-Voltage Under Cabinet Lighting

For a typical plug-in or low-voltage kit, the installation may be relatively straightforward, provided you follow the instructions for that exact system.

1. Prepare the mounting surface

Clean and dry the underside of the cabinets. Dust, grease, and moisture can prevent adhesive-backed lighting from staying in place.

If the fixture requires screws or clips, mark the mounting points and check that the fasteners will not damage the cabinet or interfere with its contents.

2. Test the lighting before permanent installation

Connect the system according to the manufacturer's instructions and test it before securing the entire run.

Check for uneven brightness, color differences, flickering, and any compatibility issues between the strip, driver, controller, and dimmer.

Testing first makes it easier to correct problems without removing adhesive or undoing the mounting hardware.

3. Attach the fixtures

For adhesive-backed strips, remove the protective layer gradually and press the strip into place without stretching or sharply bending it.

For linear fixtures, install the supplied mounting clips or brackets, then secure the fixture according to its instructions.

Avoid forcing the lighting around sharp corners. Use only the bending radius and corner connectors approved for the product.

4. Connect the power supply

Place the driver or power supply in a location permitted by the manufacturer, with the necessary ventilation and access for maintenance.

Keep it away from heat sources and locations where it could be exposed to water. Do not conceal it inside a closed cabinet unless the product is specifically rated for that installation.

Use the specified connectors and power supply. Do not exceed the rated load of the driver or connect incompatible components.

5. Manage the cables

Route cables neatly along the cabinet underside or through an approved cable-management path. Keep them clear of hinges, drawers, sharp edges, and hot appliances.

Do not leave loose wiring where it can be snagged during everyday kitchen use.

6. Test the finished installation

Turn on the lights and inspect the entire countertop. Look for dark gaps between fixtures, distracting glare, loose mounting points, or visible wiring.

If the system supports dimming, test it at several brightness levels. If it flickers, buzzes, or becomes unusually hot, turn it off and investigate the cause according to the manufacturer's instructions.

Step 5: Understand Hardwired Under Cabinet Lighting

Hardwired lighting can create a cleaner finished appearance because the power connection may be concealed within the building's electrical system. However, it involves more than mounting a fixture.

The work may require new cable routes, electrical boxes, switches, circuit modifications, and compliance with local electrical codes. Requirements vary by location and project, so there is no single wiring procedure that applies to every kitchen.

Before proceeding, determine whether the fixture is designed for hardwired installation and whether the existing electrical supply is suitable. A low-voltage LED fixture does not automatically connect directly to household line voltage; it may require a compatible driver.

The CPSC's home wiring hazard information outlines risks associated with unsafe residential wiring. The CPSC also provides a home electrical safety checklist for identifying potential hazards.

For any work that requires new or modified fixed wiring, consult a qualified electrician and check local permit requirements. Do not improvise connections or hide junctions that must remain accessible.

Step 6: Choose the Right Brightness and Color Temperature

Once you know how the fixtures will be installed, consider the quality of the light they produce.

Under cabinet lighting is task lighting, so the goal is comfortable visibility across the countertop—not simply the highest possible brightness.

How bright should under cabinet lighting be?

There is no single lumen target that suits every kitchen. Cabinet depth, countertop color, fixture spacing, beam angle, and existing ambient light all affect the result.

A dark countertop may absorb more light visually than a pale, reflective surface. A fixture with a narrow beam may create bright spots, while a well-diffused strip may distribute light more evenly.

Compare the light output of complete fixtures or strips, not just the output of an individual LED or a marketing claim about wattage.

ENERGY STAR's explanation of how brightness is measured in lumens is a useful starting point when comparing lighting products.

Which color temperature works best?

Color temperature changes how the countertop, cabinetry, and backsplash appear.

Color temperature	General appearance	Possible use
2700K	Warm and soft	Kitchens with warm wood, cream, or traditional finishes
3000K	Warm white	Many residential kitchens and mixed-use spaces
3500K	Neutral white	Kitchens where a slightly cleaner appearance is preferred
4000K	Cool-neutral white	Work areas where a crisper light appearance is desired

These are general visual descriptions, not strict rules. Existing lighting and personal preference matter, too.

The Department of Energy's consumer guide to energy-efficient lighting explains how color appearance and lumens can help consumers compare lighting products. Its research on color and light spectrum provides further technical background.

If you want adjustable color, make sure the fixture and controller support the same color-tuning method. The DOE's explanation of LED color-tunable products outlines differences between common approaches.

Step 7: Avoid These Common Installation Mistakes

Even a good lighting system can produce disappointing results if the layout or installation is poorly planned.

Placing the lights too far back

A strip positioned close to the backsplash may illuminate the wall more strongly than the front of the countertop. Test the placement before fixing it permanently.

Leaving large gaps between fixtures

Widely spaced puck lights or short linear fixtures can create alternating bright and dark patches. Check the beam distribution and spacing before deciding how many fixtures to install.

Choosing the wrong power supply

A driver must match the lighting system's voltage, load, and other specifications. An incompatible or undersized power supply may cause unreliable operation or damage.

Assuming every LED strip can be cut

Some strips can be cut only at marked locations. Others require specific connectors or cannot be shortened at all. Follow the product instructions rather than cutting wherever the length seems convenient.

Ignoring dimmer compatibility

Not every LED fixture works properly with every dimmer. Check the fixture and dimmer manufacturer's compatibility information before installation.

ENERGY STAR's LED lighting information also explains why product design and heat management matter to LED performance and longevity.

Overlooking electrical warning signs

Frequent breaker trips, buzzing, unusual heat, damaged insulation, or discolored outlets should not be ignored. The National Fire Protection Association's electrical safety resources provide further information about electrical hazards and prevention.

Stop using a system that shows signs of electrical trouble and have it checked by a qualified professional.

Step 8: Make Under Cabinet Lighting Work With the Rest of the Kitchen

Under cabinet lighting works best when it complements, rather than competes with, the rest of the kitchen.

Ceiling lights provide general illumination. Pendants may define the island or dining area. Under cabinet lights help illuminate work surfaces, while cabinet or shelf lighting can provide a softer decorative effect.

For a broader approach to coordinating these layers throughout a home, see the whole-house lighting recommendations.

If the kitchen is open to the dining or living area, keep color temperature and brightness reasonably coordinated. The fixtures do not need to match exactly, but abrupt differences in light appearance can make connected spaces feel visually disconnected.

Dimming can also help. Bright task lighting may be useful during food preparation, while a lower level can feel more comfortable during an evening meal.

The aim is to create a lighting system that adapts to the way the kitchen is used throughout the day.

FAQs

Can I install under cabinet lighting without an electrician?

Many plug-in or low-voltage kits are designed for straightforward installation, provided the work follows the manufacturer's instructions and does not involve unsafe electrical modifications. Hardwired work, new circuits, and modifications to fixed wiring should be assessed by a qualified electrician, with permits obtained where required.

Should under cabinet lighting go at the front or back of the cabinet?

The front portion of the underside is often a useful starting point because it helps direct light toward the countertop. The best position depends on cabinet depth, beam angle, fixture design, and glare. Test the light before permanent mounting.

Are LED strips better than puck lights?

LED strips generally provide more continuous illumination across long countertops. Puck lights create more localized pools of light and may suit smaller areas or specific design effects. The better choice depends on the desired distribution and the spacing of the fixtures.

Can under cabinet lights be connected to a wall switch?

Some systems support wall-switch control, while others use a plug, remote, touch control, or dedicated driver. Confirm compatibility before buying. Adding or modifying a hardwired switch may require an electrician.

Why are my under cabinet LED lights flickering?

Possible causes include an incompatible driver, loose or unsuitable connections, a dimmer mismatch, or a failing component. Stop using the system if you notice unusual heat, a burning smell, or other electrical warning signs. Check the manufacturer's troubleshooting instructions and seek professional assistance when necessary.

Do under cabinet lights need to match the ceiling lights?

They do not need to be identical, but a reasonably coordinated color temperature and brightness can help the kitchen feel cohesive. Consider the countertop material, cabinet finish, and the appearance of the room at night before making the final choice.

Final Thoughts

Installing under cabinet lighting is one way to improve countertop visibility without redesigning the entire kitchen. The best results come from planning the light distribution first, choosing a fixture that suits the cabinet layout, and confirming that the power supply and controls are compatible.

For a simple plug-in or low-voltage system, careful measuring, testing, mounting, and cable management may be enough. For hardwired installations or work involving fixed electrical wiring, use a qualified electrician and follow applicable local requirements.

Most importantly, judge the finished result by how well it lights the surfaces where you cook and work—not just by how the fixtures look when switched on.