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How to Install a Vanity Light

Home/Resources/Bathroom/Installing a Vanity Light
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Written & researched by Priya Anand DIY & Tools Editor
Updated August 2026
Three-quarter view of a person's hands fitting a new shower head in a tiled bathroom, in soft early-morning light

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Replacing a vanity light is a light-electrical DIY job of about 30 to 60 minutes for a like-for-like swap, with fixtures running $30 to $200. The mechanical part is easy; the care is all in the wiring. You must switch off the circuit at the breaker and verify it is dead before touching anything, and the fixture should be damp-location rated for a bathroom. A straight replacement on existing wiring is DIY-friendly. Adding a new fixture, running new cable, or dealing with an ungrounded box is a licensed-electrician job, and codes near water are jurisdiction-specific.

How to Replace a Vanity Light — The Home Depot

Step-by-step: swapping a vanity light

  1. Kill the power and verify. Switch off the breaker for the bathroom lighting, then hold a non-contact voltage tester to the existing fixture wires to confirm they are dead. Do not rely on the wall switch alone.
  2. Remove the old fixture. Unscrew the mounting nut or screws, ease the fixture off the box, and unscrew the wire nuts to free the black, white and ground connections.
  3. Check the box and mounting. Confirm the electrical box is secure and rated to support the fixture. Note whether there is a ground wire; there should be.
  4. Attach the new mounting bracket. Screw the fixture's mounting strap to the box. Thread the fixture wires through as needed.
  5. Make the connections. Join black to black (hot), white to white (neutral), and the fixture ground to the box ground or ground screw, each with a wire nut over tightly twisted, fully inserted strands. Tug each to confirm it holds.
  6. Set the height and level. With a bar light, position it about 75 to 80 inches off the floor and 3 to 6 inches above the mirror, and level it before final tightening. Sconces go at roughly eye level, 60 to 66 inches, flanking the mirror.
  7. Mount the fixture body. Tuck the wires into the box, seat the fixture, and secure it with the cap nut or screws so it sits flush and straight.
  8. Bulb, power and test. Install the correct bulbs, restore the breaker, and test the switch. If it does not light, cut power and recheck the connections.
Low-angle view of a person's hands fitting a new shower head in a tiled bathroom, in warm evening lamplight

Tools and materials

You need a non-contact voltage tester, a screwdriver, a wire stripper, wire nuts, a level, and a damp-location-rated vanity fixture with the right bulbs. A vanity light is usually swapped during a mirror or vanity refresh, so it commonly rides along with the other jobs in this hub; see our mirror replacement guide for the companion step, and if the room stays foggy after showers, the fixture will last longer with better airflow from a unit in our exhaust fan roundup.

Three-quarter view of a person's hands fitting a new shower head in a tiled bathroom, in warm evening lamplight

Electrical near water and code

The whole risk here is electrical, in a wet room. Always switch off the breaker and confirm dead with a tester before touching wires; the wall switch is not enough. Use a fixture rated at least for damp locations in a bathroom, and wet-location rated over a tub or shower. Ground every metal fixture, and never remove the ground to make a fit. If you find no ground wire, aluminum wiring, a box that is not fixture-rated, or you are adding a fixture rather than replacing one, stop: those are jobs for a licensed electrician, and electrical work in bathrooms is governed by code that varies by jurisdiction and often requires a permit. When unsure, hire a pro.

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More from this hub: Bathroom · Replacing a bathroom mirror · Installing a medicine cabinet · Installing a bathroom vanity · Best exhaust fans · How we rank

Straight Answers

Frequently Asked

How high should a vanity light be mounted above the mirror?

Mount a vanity light so the fixture is about 75 to 80 inches above the finished floor, which typically lands it 3 to 6 inches above the top of the mirror. That height throws light down onto the face rather than into your eyes and avoids harsh shadows. If you are using vertical sconces flanking the mirror instead of a bar above it, mount them at about 60 to 66 inches to the center, roughly eye level, one on each side, which is the flattering, shadow-free arrangement pros prefer. Confirm the fixture clears the mirror and the medicine cabinet door swing.

Can I replace a vanity light myself or do I need an electrician?

Swapping an existing vanity light for a new one on the same box and wiring is a common DIY task if you are comfortable turning off the circuit and matching a few wires. You do not need an electrician for a like-for-like replacement. You do need one, and often a permit, if you are adding a new fixture where none existed, running new cable, moving the box, or you find aluminum wiring, no ground, or a box that is not rated to support the fixture. When in doubt about the wiring you uncover, stop and call a licensed electrician.

Does a bathroom vanity light need to be rated for damp locations?

A vanity light over the sink area generally needs to be at least damp-location rated because of the humidity, and any fixture within the zone directly over or beside a tub or shower must be wet-location rated. The rating is printed on the fixture and its box. Bathrooms are humid environments and the electrical code treats them accordingly, with stricter requirements the closer a fixture is to the tub or shower. Using a dry-location-only fixture in a steamy bathroom shortens its life and can be a code violation, so check the label before you buy.

Why does my new vanity light not turn on after installing it?

Work back through the basics. First confirm the breaker is on and the wall switch works. Then, with the power off again, recheck your connections: black (hot) to black, white (neutral) to white, and the bare or green ground to the ground screw or wire, each twisted tight under a wire nut with no loose strands. A single loose neutral or a hot connected to the switched leg incorrectly is the usual culprit. Also verify the bulbs are seated and of the right type. If the switch and breaker are fine and connections are correct, the fixture may be faulty.

Do you need to ground a metal vanity light fixture?

Yes. Connect the fixture's ground (green or bare) wire to the ground wire in the box, or to the metal box's ground screw, so a fault trips the breaker instead of energizing the metal fixture. Older homes sometimes have boxes with no ground wire; in that case the safe path is to have an electrician assess it, because a metal fixture with no ground in a wet room is a shock risk. Never cut off or ignore the ground lead to make a fixture fit. Grounding is a core safety step, not an optional one, especially in a bathroom.