License plate lights are straightforward to replace yourself in most vehicles

Your license plate lights are the small bulbs mounted above or below your rear license plate that illuminate it at night. They burn out like any other bulb, and replacing them takes 10 to 30 minutes with basic tools you probably already own. Most vehicles use either a twist-out socket or a bolt-on housing — you'll know which one you have the moment you look at the back of your plate.

The job requires no special skills or mechanical knowledge. You'll need a screwdriver (usually Phillips head), possibly a socket wrench or pliers, and a replacement bulb. The bulb type varies by vehicle year and model, but your owner's manual or a quick search with your vehicle's year, make, and model will tell you exactly which one to buy — they cost $3 to $10 each.

Key Takeaways

  • Most license plate light housings either twist out from behind the bumper or bolt on with one or two fasteners visible from outside.
  • Your vehicle's owner's manual lists the exact bulb type you need, or you can search online using your vehicle's year, make, and model.
  • The entire job usually takes 10 to 30 minutes and requires only a screwdriver or socket wrench and the replacement bulb.
  • If the housing is cracked, corroded, or the wiring is damaged, you may need to replace the entire fixture rather than just the bulb.

Locate the bulb housing and identify how it attaches

Walk to the back of your vehicle and look directly above or below your license plate. You'll see a small rectangular or round fixture — that's your license plate light housing. Look at how it's mounted. If you see a bolt or screw head on the outside of the housing, it bolts on from the rear bumper. If you don't see any fasteners on the outside, the housing likely twists out from behind the bumper.

For bolt-on housings, you'll see one or two fasteners (usually Phillips head screws or small bolts). For twist-out housings, you'll need to reach behind the bumper or into the wheel well to access the socket from the back. Some vehicles have the housing recessed into the bumper itself, which means you'll work from behind. Check your owner's manual if you're unsure — it will show a diagram of your specific setup.

Remove the housing or socket

If your housing bolts on from the outside, use your screwdriver or socket wrench to remove the fasteners. Keep them in a small container so you don't lose them. Gently pull the housing away from the bumper — it may have a rubber gasket or seal, so don't force it.

If your housing twists out, you'll need to access it from behind the bumper. This usually means reaching up into the wheel well or behind the bumper trim. Once you locate the socket from the back, grip it firmly and turn it counterclockwise about a quarter turn — it should come free. Some vehicles require you to remove a trim panel first; your owner's manual will show you where.

Remove and replace the bulb

Once the housing is out, look inside. You'll see a bulb seated in a socket. The bulb either twists out (turn counterclockwise) or pulls straight out. Most license plate lights use a push-and-twist bulb, so push gently and turn counterclockwise until it releases. If it pulls straight out, straightforward pull it free.

Insert the new bulb into the socket. If it's a twist-in bulb, push it in gently and turn clockwise until it seats. If it's a straight-pull bulb, push it in until you hear or feel a click. Don't force it — the bulb should slide in smoothly. Before you reinstall the housing, turn on your headlights to test the new bulb.

Reinstall the housing and test

If your housing bolts on, align it with the bumper and reinstall the fasteners. Tighten them snugly but not so hard that you crack the plastic housing. If your housing twists in, insert it into the socket from behind and turn clockwise until it stops — you'll feel it seat.

Turn on your headlights or parking lights and walk around to the back to confirm the new bulb is working. If it lights up, you're done. If it doesn't, the bulb may not be seated properly — remove the housing again and reseat the bulb, making sure it's pushed all the way in.

When to replace the entire housing instead of just the bulb

If the housing is cracked, the lens is cloudy or discolored, or water is pooling inside, replacing just the bulb won't solve the problem. A cracked lens lets water in, which corrodes the socket and wiring and causes the new bulb to burn out quickly. A cloudy lens reduces light output even with a working bulb.

If you see corrosion (white, green, or blue crusty buildup) on the socket or wiring, the entire fixture should be replaced. Replacement housings cost $15 to $40 and bolt on the same way the old one came off. If you're not comfortable with the wiring, a mechanic can install it in 15 minutes for a small labor charge.

Finding the right bulb for your vehicle

License plate light bulbs come in several standard types: 194, 168, 2825, and 921 are the most common. Your owner's manual will list which type your vehicle uses. If you don't have the manual, search online for "[your year] [make] [model] license plate light bulb" — you'll find the answer in seconds.

When you buy the bulb, you have two choices: standard incandescent bulbs (the cheapest, around $3 to $5) or LED bulbs (more expensive at $8 to $15, but they last much longer and use less power). Both fit the same socket. LED bulbs are brighter and last 10 times longer, so they're worth the extra cost if you plan to keep the vehicle for several years.

Frequently Asked Questions

Can I replace the bulb without removing the housing?

Not usually. The housing must come out to access the bulb socket. For bolt-on housings, this takes 30 seconds. For twist-out housings, you may need to reach behind the bumper, but it's still straightforward. Your owner's manual will show the exact steps for your vehicle.

What if the bulb won't twist out?

If it's stuck, don't force it — you'll break the socket. Try gently rocking it side to side while turning, or explore a tiny amount of penetrating oil (like WD-40) around the base and wait 10 minutes. If it's still stuck, the socket may be corroded and need replacement.

Is it safe to drive with a burned-out license plate light?

No. Most states require license plate lights to work, and you can be cited for a burned-out bulb. More importantly, your plate won't be visible at night, which is a safety issue. Replace it as soon as you notice it's out.

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

No. The bulb circuit carries very low power and poses no shock risk. You don't need to disconnect anything — just remove the housing and swap the bulb.

What if both license plate lights are burned out?

Replace them one at a time using the same steps. If both burned out at the same time, it's likely a coincidence, but if they keep burning out together, have a mechanic check the wiring for a short or voltage problem.