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Plug-in LED under-cabinet lighting is one of the easiest upgrades in the house — plan on an afternoon, about $20 to $80 for a kitchen's worth of strips or pucks, and no wiring or permit. You mount the lights, hide the cord, and plug into an existing outlet. The only version that needs a licensed electrician is fully hardwired lighting with no visible cord, fed from a wall switch, which means opening the wall and tapping a circuit. This guide covers the plug-in route almost everyone chooses, plus where the pro line is.
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Tools and materials
- An LED under-cabinet kit — strips, bars, or pucks. Our best under-cabinet lighting guide ranks kits by owner-reported brightness, color accuracy, and adhesive that actually holds.
- Isopropyl alcohol and a clean rag to degrease the mounting surface — adhesive fails on greasy kitchen cabinets more than for any other reason.
- A drill with a small bit for routing the cord, plus adhesive cord clips (usually included).
- Scissors or the kit's cut points for trimming strips to length, and a tape measure.
- Optional: a paintable cord raceway to hide the run to the outlet.

Step 1: Plan the layout and power path
Measure the underside of each cabinet run and decide strip versus pucks — strips for even task light, pucks for accent pools. Pick which existing outlet will feed the system and map the cord path: up the back inside corner of a cabinet, through a small drilled hole, toward that outlet. Do this before sticking anything, because a driver or plug you place without a plan becomes a visible cord you cannot hide.
Step 2: Clean and dry-fit
Wipe the mounting surface with isopropyl alcohol and let it flash dry — kitchen cabinets carry a thin film of cooking grease that defeats adhesive. Dry-fit the strip or pucks with the backing still on to confirm placement: strips toward the front underside so light hits the counter not the backsplash, pucks 8 to 12 inches apart and 4 to 6 inches back from the front edge. Mark positions lightly with a pencil.

Step 3: Cut and connect the runs
Trim LED strips only at the printed cut lines (usually every 2 to 4 inches); cutting elsewhere kills that segment. Join separate cabinet runs with the kit's corner connectors or short link cables so a single driver feeds the whole kitchen. Test the assembled run by plugging it in before you commit any adhesive — far easier to fix a dead connector now than after everything is stuck down.
Step 4: Mount and route the cord
Peel the backing a few inches at a time and press the strip firmly along its line, working from one end so it stays straight. Set pucks on their marks. Route the low-voltage lead up the cabinet's back corner with the adhesive clips, through the drilled hole, and down to the outlet, tucking the driver behind or on top of a cabinet where it is out of sight. Use a cord raceway for any run that would otherwise show.

Step 5: Switch and test
Plug in and confirm even, flicker-free light with no dark scallops and no visible cord. Many kits include an inline switch, a remote, or a motion sensor; if you want wall-switch control without rewiring, a smart plug lets you switch the lights by app or voice. Warm-neutral 3000K to 3500K at 90+ CRI is the target for a counter you actually work on.
Common mistakes
- Skipping the alcohol wipe. Grease is why strips fall off in a month. Degrease first.
- Mounting strips too far back. They light the backsplash instead of the counter. Keep them forward.
- Cutting a strip off its marks. Only cut at the printed lines.
- No cord plan. Route to the outlet before you stick, or you will see wire.
- Under-buying brightness. Aim for 200 to 500 lumens per foot for real task light.
When to call an electrician
Plug-in and battery lights are pure DIY. Bring in a licensed electrician if you want a hardwired system with no cord, fed from a switch — that means cutting into the wall, tapping an existing circuit or running a new one, and possibly a permit that is jurisdiction-specific. Any new circuit or panel work is a pro job, never DIY.
Related reading: how to install LED strip lights, how to install a smart light switch, and how to install recessed lighting.