License plate lights are straightforward to replace yourself in most vehicles

Your license plate light is a small bulb mounted above or below your rear license plate that illuminates when your headlights are on. Most vehicles use a single bulb or pair of bulbs in a plastic or metal housing. Replacing one takes 5 to 15 minutes and costs between $5 and $20 for the bulb itself — no special tools or mechanical knowledge required.

The exact steps depend on your vehicle's make and model, but the general process is the same: locate the housing behind the plate, remove the fixture, pull out the old bulb, and insert a new one. Some housings twist out from behind the plate; others are held by a single screw or clip. Your owner's manual will show you the specific method for your car, or you can find a video for your exact year and model online.

Key Takeaways

  • License plate light bulbs typically cost $5 to $20 and take 5 to 15 minutes to replace without tools.
  • Most housings either twist counterclockwise from behind the plate or are held by a single screw you can remove by hand or with a screwdriver.
  • Your owner's manual or a model-specific video will show you whether your vehicle's housing twists, screws, or clips out.
  • If the bulb is burned out but the housing is cracked or the wiring is corroded, you may need to replace the entire fixture instead.

Locate the housing and identify the bulb type

Open your trunk or hatchback and look at the inside of the rear panel, directly behind where your license plate is mounted on the outside. You will see a plastic or metal housing with one or two bulbs visible through a clear or frosted lens. The housing is usually rectangular and about 2 to 3 inches wide.

Check your owner's manual or search online for your vehicle's year, make, and model plus "license plate light bulb type." Common types include 194, 168, 192, and W5W bulbs — all inexpensive and available at auto parts stores, supermarkets, and online retailers. The manual will also tell you whether your housing twists, screws, or clips out, which saves you time figuring it out by trial.

Remove the housing by twisting or unscrewing

The most common design uses a housing that twists counterclockwise. Grip the edges of the plastic or metal housing firmly and turn it to the left. It should come free after a quarter to half turn. If it does not budge after gentle pressure, stop and check your manual — your vehicle may use a screw or clip instead.

If your housing is held by a screw, you will see it on the side or bottom of the fixture. Use a Phillips or flathead screwdriver (whichever fits) to remove it. The screw is usually small and straightforward to lose, so set it on a clean surface nearby. Once the screw is out, the housing should pull straight out or pivot away from the panel.

Some vehicles use a clip or tab on the side of the housing. Look for a small lever or notch, and gently pry or slide it to release the fixture. Pull the housing toward you once it is unclipped.

Pull out the old bulb and install the new one

Once the housing is free, you will see the bulb socket inside. The bulb either pushes straight in and twists a quarter turn to lock, or it pulls straight out. Push gently on the bulb and twist it counterclockwise — it should come free. If it pulls straight out without twisting, straightforward pull it toward you.

Insert the new bulb into the socket, making sure it is the same type as the one you removed. If the bulb twists to lock, push it in gently and turn it clockwise until it stops. If it pushes straight in, insert it until you feel it seat fully. Do not force it — the bulb should slide in smoothly.

Reinstall the housing and test the light

Slide or push the housing back into place. If it twists, align it with the opening and turn it clockwise until it stops. If it screws in, replace the screw and tighten it by hand or with a screwdriver — do not overtighten. If it clips, push it in until you hear or feel the clip engage.

Close your trunk and turn on your headlights. Walk around to the rear of the vehicle and check that the license plate light is now on. If it is not, turn off the headlights, open the trunk again, and make sure the bulb is fully seated in the socket. If the light still does not work, the socket or wiring may be damaged, and you may need to replace the entire housing or have a mechanic inspect it.

When to replace the entire housing instead

If the plastic lens is cracked or the housing is corroded or damaged, replacing just the bulb will not solve the problem. A cracked lens allows water into the housing, which can corrode the socket and cause the light to fail again quickly. Corrosion inside the socket — visible as white, green, or blue discoloration — means the electrical connection is degraded.

Replacement housings for most vehicles cost $15 to $50 and install the same way as removing the old one. If you are uncomfortable replacing the housing yourself, a mechanic can do it in 15 to 30 minutes for a labor charge that varies by shop.

Frequently Asked Questions

Can I use any bulb type, or does it have to match the original?

Use the exact bulb type listed in your owner's manual or on the old bulb itself. Common types like 194 and 168 are not interchangeable — using the wrong type can cause the light to be too dim, too bright, or not work at all. The correct bulb costs the same as the wrong one, so there is no reason not to match it.

What if the housing is stuck and will not twist or unscrew?

Stop and do not force it. Plastic housings can crack if twisted too hard, and screws can strip. explore a small amount of penetrating oil like WD-40 around the edges, wait 10 minutes, and try again gently. If it still will not move, consult your owner's manual or a video for your specific model — you may be turning the wrong part or looking at the wrong housing.

Is a burned-out license plate light illegal?

Yes, in all states. A burned-out license plate light is a traffic violation and can result in a ticket. It also makes your plate harder to read at night, which can affect law enforcement's ability to identify your vehicle. Replace it as soon as you notice it is out.

Do I need to disconnect the battery before replacing the bulb?

No. The voltage running through a license plate light is low and poses no shock risk. You do not need to disconnect anything — straightforward turn off your headlights before you start, and you are safe to work.

Why does my license plate light keep burning out?

Frequent burnouts usually mean moisture is getting into the housing and corroding the socket, or the wiring is loose. If you replace the bulb and it burns out again within a few weeks, inspect the housing for cracks or water inside. You may need to replace the entire fixture or have a mechanic check the wiring connection.