Owen Bradley Under-cabinet puck lights are the fastest upgrade you can make to a kitchen. Overhead fixtures put your own body between the ceiling and the counter, so the surface where you actually chop, measure, and read labels is usually the darkest part of the room. A row of small round pucks fixed to the underside of the wall cabinets fixes that in an afternoon, and depending on the type you choose the whole job can be done with a screwdriver and a tape measure. This guide covers planning the layout, choosing between plug-in, battery, and hardwired power, mounting the fixtures, and hiding the wires so the finished result looks built in rather than stuck on.
Puck Lights vs Strip and Bar Lighting
Pucks throw a distinct cone of light, which creates a scalloped pattern of bright pools with softer areas between them. Many people like that look — it reads as intentional accent lighting and it highlights a backsplash nicely. If you want completely even illumination edge to edge, a linear strip or light bar is the better tool, and it is worth comparing the options in our guide to the best LED strip lights for kitchen cabinets before you commit.
Pucks win on three counts. They are easy to place around obstacles like corner cabinets and range hoods, they can be aimed in swivel versions, and they are usually the cheapest way to add light under a short run of cabinetry. Many kitchens end up with a mix: strips over the long prep runs, pucks over a corner or a glass-front display cabinet.
Choose Your Power Source First
Everything about the install depends on how the lights get power, so decide this before you buy anything.
- Plug-in. A low-voltage driver plugs into a nearby outlet and feeds a daisy chain of pucks. This is the best balance of brightness, reliability, and simplicity for most kitchens, provided there is an outlet you can reach discreetly.
- Battery or rechargeable. No wires at all. Ideal for rentals, a single dark corner, or a cabinet with no outlet nearby. The trade-off is lower output and periodic recharging. If this is your route, the roundups of best battery powered LED strip lights and the best rechargeable LED lights both cover runtime and mounting options worth checking.
- Hardwired. The cleanest look and the brightest result, with a wall switch instead of a remote or a cord. It also means opening walls or working inside cabinets, and in many areas it requires a permit or an electrician.
For a first project, plug-in is the sensible default. You get real brightness without touching the house wiring.
Planning the Layout
Measure each cabinet run and mark where the pucks will sit. Two rules cover most kitchens. Space pucks about 8 to 12 inches apart along the run to keep the bright pools overlapping, and set them about one-third of the way back from the front edge of the cabinet bottom rather than dead centre. Mounting them forward aims the light at the working surface instead of the backsplash, and it keeps the bulb out of your direct line of sight when you stand at the counter.
Count fixtures per run rather than per kitchen. A 36-inch cabinet usually takes three pucks; a 24-inch cabinet takes two. Skip the section directly above the sink if there is a window valance in the way, and plan around the range hood, which often has its own light.
Colour temperature matters as much as placement. Choose 2700K to 3000K to match warm kitchen lighting, or up to 3500K if you want a crisper look for food prep. Keep it consistent with your ceiling fixtures — mismatched temperatures are the fastest way to make a kitchen look unplanned. If you are aligning the whole room, the guide to the best LED light bulbs for kitchen fixtures is a useful reference point.
Tools and Materials
- Tape measure and pencil
- Cordless drill with a small pilot bit and a driver bit
- Screwdriver, and a hole saw only if you are recessing the pucks
- Adhesive cable clips or self-adhesive wire channel
- Double-sided mounting tape or the screws supplied with the kit
- Isopropyl alcohol and a cloth for cleaning mounting surfaces
- Painter’s tape for mocking up positions
Step-by-Step Installation
- Empty the counter and clear access. Move small appliances and lay a towel down so dropped screws do not chip the countertop. If you are drilling, open the cabinet doors and remove the lowest shelf contents in case a bit breaks through.
- Mock up the spacing. Stick a piece of painter’s tape at each planned puck position. Stand at the counter and check that no fixture will glare into your eyes and that the spacing looks even along the run.
- Clean the mounting surface. Wipe the underside of the cabinet with isopropyl alcohol and let it dry. Adhesive pads fail on greasy cabinet bottoms, and kitchen cabinet undersides are greasier than they look.
- Mount the first puck. For screw mounting, hold the mounting ring or base against the mark, drill shallow pilot holes, and drive the screws. Check the screw length against the cabinet bottom thickness so nothing pokes through into the shelf above.
- Work down the run. Fit the remaining pucks at your marked positions, keeping every fixture the same distance back from the cabinet’s front edge so the light pools line up.
- Route the connecting cables. Run the wires along the back edge of the cabinet bottom, where the shadow line hides them, and secure them every 6 to 8 inches with adhesive clips or inside a stick-on channel. Leave a small service loop at each puck so a fixture can be removed later without cutting anything.
- Cross between cabinets. Where a run jumps a gap, drill a small hole through the cabinet side wall inside the cabinet, feed the cable through, and smooth the edge so it does not chafe the insulation.
- Connect to the driver. Plug the daisy chain into the low-voltage driver, then plug the driver into the outlet. Confirm the driver’s wattage rating is comfortably above the combined draw of all your pucks.
- Test everything before finishing. Switch on and check that every puck lights and that none flickers. It is far easier to fix a bad connector now than after the cables are clipped down and hidden.
- Tidy the cord run. Route the driver cord down the back corner of the cabinet or through a small hole into the cabinet interior, and mount the driver inside a cabinet or behind a toe kick where it stays ventilated and out of sight.
- Add control. Fit an inline switch, a plug-in remote, or a smart plug so you are not reaching behind an appliance to unplug the lights every night.
Surface Mount or Recessed?
Surface-mounted pucks screw or stick straight onto the cabinet bottom and are perfectly fine — under a wall cabinet they are barely visible from normal standing height. Recessed pucks sit in a hole cut with a hole saw, giving a flush, built-in look. Recessing only works if the cabinet bottom is thick enough and there is clearance above for the fixture body, so measure carefully and check what is stored on that shelf before cutting.
Common Mistakes
- Mounting pucks too far back. Light hits the backsplash instead of the counter and the fixture reflects in glossy tile.
- Spacing too far apart. Gaps of 18 inches or more create obvious dark bands between the pools of light.
- Skipping the surface prep. Adhesive pads on greasy cabinet bottoms drop the fixture within weeks.
- Mixing colour temperatures. Pucks that are cooler or warmer than the ceiling lights make the whole kitchen look off.
- Overloading the driver. Running more pucks than the driver is rated for causes dimming, flicker, and early failure.
- Leaving cables loose. Unclipped wires sag into view and snag on anything stored on the counter.
Keeping Them Looking Good
Under-cabinet fixtures sit right in the path of steam and cooking grease, so lenses haze over faster than you expect. Wipe each puck with a damp cloth and a little dish soap every couple of months and the output stays where it started. Avoid solvents and abrasive pads, which craze acrylic lenses permanently.
Check the adhesive and the cable clips at the same time. Heat cycling and kitchen humidity loosen sticky pads over a year or two, and a puck that has started to sag is easier to re-secure before it falls onto a countertop. If you used batteries, note the change interval somewhere so a dead cell does not surprise you mid-recipe.
Troubleshooting
If one puck is dark, unplug the run and reseat the connector at both ends of that fixture — pin connectors seat imperfectly more often than pucks fail. If the last few pucks in a chain are visibly dimmer than the first, you are seeing voltage drop, which means either too many fixtures on one driver or a driver that is underrated. Split the run across two drivers or step up the supply.
Flicker on a dimmable setup usually means the dimmer and the driver are not compatible. If the pucks run hot to the touch, check that nothing on the shelf above is pressing against the fixture body, since LEDs need that surface to shed heat.
Frequently Asked Questions
How many puck lights do I need per cabinet?
Plan on one puck for every 8 to 12 inches of cabinet run, which usually works out to two for a 24-inch cabinet and three for a 36-inch cabinet.
Can I install puck lights without any wiring?
Yes. Battery and rechargeable pucks stick on with adhesive or magnets and need no electrical work at all, at the cost of lower brightness and periodic charging.
Where exactly should pucks be mounted?
About one-third of the way back from the cabinet’s front edge, so the light lands on the counter rather than the wall.
Do puck lights get hot?
Modern LED pucks run warm rather than hot, but they still need airflow around the housing. Leave the space above a recessed puck clear.
Final Thoughts
Installing under-cabinet puck lights is one of the highest-value hours you can spend in a kitchen. Decide on your power source first, space the fixtures 8 to 12 inches apart and set them forward on the cabinet bottom, clean the surface before anything sticks to it, and test the whole run before you clip a single cable. Do that and you get a counter that is genuinely usable after dark, with hardware that looks like it came with the kitchen.
