Replacing a number plate light takes 5 to 15 minutes and costs $5 to $25 for the bulb

A burned-out number plate light is a minor repair you can usually do yourself with a screwdriver and a replacement bulb. The light sits in a fixture mounted above or below your rear license plate, and the bulb inside burns out like any other automotive light. Most vehicles use a standard bulb size that you can buy at any auto parts store, hardware store, or online retailer.

The exact steps depend on whether your fixture is held in by screws, clips, or a twist-lock design — and that varies by vehicle make, model, and year. Once you know which type you have, the job is straightforward enough that you do not need special tools or mechanical experience.

Key Takeaways

  • Number plate lights typically use a 194, 168, or 501 bulb, which you can confirm by checking your owner's manual or removing the old bulb and reading its base.
  • Most fixtures are held in place by two small Phillips-head screws, though some vehicles use clips or a bayonet twist-lock that requires no tools.
  • A burned-out number plate light is a minor traffic violation in most states, so replacing it promptly keeps you from being stopped.
  • If the bulb is new but the light still does not work, the fixture itself may be damaged or the wiring may have failed, which requires a mechanic.

Locate the number plate light fixture and identify how it attaches

Walk to the rear of your vehicle and look directly above or below your license plate. You will see a small rectangular or oval plastic or metal housing — that is the fixture. Look closely at how it is mounted to the bumper or body panel. Most vehicles use two Phillips-head screws on the sides or bottom of the fixture. Some use spring clips that you can see from the outside. A few use a bayonet-style twist-lock where you push the fixture in and turn it counterclockwise to remove it.

If you cannot tell from looking, check your owner's manual — it will show the exact design for your vehicle. You can also take a photo and search for "[your vehicle year, make, model] number plate light removal" online to find step-by-step photos or videos from other owners with the same car.

Remove the fixture and take out the old bulb

If your fixture uses screws, use a Phillips-head screwdriver to remove both screws. Keep them in a small container so you do not lose them. If it uses clips, gently pry the fixture away from the bumper or body panel using a plastic trim tool or a flathead screwdriver wrapped in a cloth to avoid scratching the paint. If it uses a bayonet lock, push the fixture in slightly and turn it counterclockwise until it comes free.

Once the fixture is out, look inside. You will see a bulb holder — a plastic or metal socket with the bulb inserted into it. The bulb may twist out (turn it counterclockwise), pull straight out, or be held in by a small wire clip. Try twisting first; if that does not work, pull gently. If there is a clip, lift it carefully and the bulb will come free. Note the bulb's base — it will have a number stamped on it like 194, 168, or 501. Write this number down or take a photo.

Buy and install the replacement bulb

Take the old bulb to an auto parts store, or search online for the bulb number you noted. Number plate light bulbs are inexpensive — usually $3 to $8 each. You can also check your owner's manual, which lists the correct bulb size for every light on your vehicle. Buy one bulb (or two if you want a spare).

Insert the new bulb into the socket using the same method the old one came out — twist it in if it twisted out, push it in if it pulled out, or find it with the clip if there was one. Do not force it; it should slide in smoothly. Once the bulb is seated, reinstall the fixture by reversing the removal steps: screw it back in, clip it back on, or twist it clockwise until it locks.

Test the light and check for other burned-out bulbs

Turn on your headlights or have someone stand behind the vehicle while you turn on the lights. The number plate light should glow brightly. If it does not, remove the fixture again and check that the bulb is fully seated in the socket. If the new bulb still does not work, the wiring or fixture itself may be damaged — that is a job for a mechanic.

While you are back there, look at the other number plate light (if your vehicle has one on the other side). If both are burned out, replace the second one now using the same steps. It is also worth checking your brake lights and reverse lights while you are at it — if multiple lights are out, you may have a wiring or fuse issue that needs attention.

What to do if the fixture is damaged or stuck

If the screws are stripped or corroded and will not turn, try spraying them with penetrating oil (like WD-40) and waiting 10 minutes before trying again. If the fixture itself is cracked or the socket is damaged, you will need to replace the entire fixture, not just the bulb. These typically cost $15 to $40 and are available online or at auto parts stores.

If the fixture is stuck and you cannot remove it without risking damage to the bumper or body panel, stop and take the vehicle to a mechanic. Forcing it can crack the plastic or strip the mounting points, which costs more to repair than having a professional remove it.

Why your number plate light matters

A burned-out number plate light is a minor traffic violation in most states. Police can stop you for it, and some states include it in vehicle inspection requirements. More importantly, it makes your license plate hard to read at night, which can be a safety issue and may cause problems if you are involved in an accident or hit-and-run situation.

Replacing the bulb takes minutes and costs almost nothing, so it is worth doing as soon as you notice it is out. Many people discover the problem only when they are stopped by police or fail an inspection, which is easily avoided by checking your lights regularly.

Frequently Asked Questions

Can I drive with a burned-out number plate light?

Technically, no — it is a traffic violation in most states. You can be stopped and cited for it. The fine is usually small ($25 to $100), but it is an unnecessary risk. Since the repair takes 15 minutes and costs under $10, it is better to fix it right away.

What if I do not know what bulb size my vehicle uses?

Check your owner's manual — it lists every bulb size for every light. You can also remove the old bulb and read the number on its base, or search online for "[your vehicle year, make, model] number plate light bulb size." Auto parts store staff can also look it up if you give them your vehicle information.

Is it the same as replacing a brake light or headlight bulb?

The process is similar — you remove a fixture, take out the old bulb, and install a new one — but the bulb sizes and fixture designs are different. Number plate lights use smaller bulbs (usually 194 or 168) than brake lights or headlights, and the fixtures are simpler. The steps are actually easier for a number plate light than for most other automotive bulbs.

What if the new bulb burns out again after a few weeks?

If a new bulb burns out quickly, the fixture or wiring may be damaged, or there may be a short circuit. Take the vehicle to a mechanic to have the wiring and fixture inspected. Repeated bulb failure is not normal and points to an electrical problem that needs professional diagnosis.

Do I need any special tools?

Usually just a Phillips-head screwdriver. Some fixtures use clips or twist-locks and need no tools at all. A plastic trim tool or flathead screwdriver wrapped in cloth can help pry clips gently without scratching paint, but a regular screwdriver works fine if you are careful.