What you need to do to replace a blinker light

Replacing a blinker light takes about five to ten minutes and requires no special tools beyond what most people have at home. You'll remove the old bulb from the housing behind the lens, note what type it is, buy a matching replacement, and push the new one in. The hardest part is usually reaching the housing, not the replacement itself.

The process is nearly identical whether you're replacing a front or rear blinker. The main difference is access: front blinkers are often easier to reach from inside the wheel well, while rear blinkers are usually accessed from inside the trunk or through the interior panel. Your owner's manual will show you the exact location and the type of bulb your car uses.

Key Takeaways

  • Most blinker bulbs cost between $3 and $15 and are available at any auto parts store, gas station, or big-box retailer.
  • You need to know your car's year, make, and model to buy the correct bulb type, or you can bring the old bulb to the store and match it.
  • The bulb housing twists or pulls out from behind the lens, and the bulb itself either twists out or pulls straight back.
  • If the new bulb doesn't light up after installation, the problem is usually a blown fuse rather than the bulb itself.

Locate the blinker housing behind the lens

Open your hood or trunk, depending on which blinker you're replacing. Look directly behind the lens that's burned out. You'll see a plastic or metal housing that holds the bulb. On front blinkers, you may need to reach in from the wheel well rather than from above the engine.

If you can't see the housing clearly, consult your owner's manual. It will show you whether you need to remove any trim pieces or access panels first. Most cars don't require this, but some models have the housing tucked behind a panel that takes 30 seconds to remove.

Remove the old bulb and note its type

Grip the bulb housing and twist it counterclockwise, or pull it straight toward you—your manual will specify which. Once the housing comes free, you'll see the bulb sitting in a socket. The bulb either twists out (turn it counterclockwise) or pulls straight out. Don't force it; if it's stuck, wiggle gently while pulling or twisting.

Look at the base of the old bulb. You'll see a number printed on it, like 1156, 7440, or 3157. Write this number down or take a photo. This is what you need to buy. If the number is hard to read, you can bring the old bulb to an auto parts store and they'll match it for you.

Buy the correct replacement bulb

Go to any auto parts store, gas station, or retailer that sells car bulbs—AutoZone, O'Reilly, Advance Auto Parts, Walmart, or Target all carry them. Tell the staff the bulb number you found, or describe which blinker is out and give them your car's year, make, and model. They'll hand you the right bulb.

Standard blinker bulbs cost $3 to $8. Some cars use LED bulbs, which cost $10 to $15, but the packaging will make clear what your car needs. Don't buy a bulb that's a different type than the one you removed—it won't fit the socket.

Install the new bulb and test it

Push the new bulb into the socket. If it twists in, turn it clockwise until it stops—don't force it. If it pulls in, push straight until you feel it seat. The bulb should be snug but not tight. Slide the housing back into the lens opening and twist or push it until it clicks or seats fully.

Get in the car and turn on the blinker. You should see the light flash. If it doesn't light up, turn off the car, remove the bulb again, and check that it's pushed in all the way. If it still doesn't work after reinstalling, the problem is likely a blown fuse, not the bulb.

What to do if the new bulb doesn't light

If the bulb is installed correctly but the light still won't turn on, check the fuse. Your owner's manual shows the location of the fuse box and which fuse controls the blinkers. It's usually labeled "Turn" or "Blinker." Pull the fuse out and look at the wire inside—if it's broken or blackened, the fuse is blown.

Buy a replacement fuse of the same amperage (the number printed on the fuse, like 10A or 15A) and push it in. If the fuse blows again when ready, there's a wiring problem that needs a mechanic. If it stays good, you're done. If the fuse is fine but the light still doesn't work, the issue is in the wiring or the switch, and a mechanic should look at it.

Frequently Asked Questions

Can I replace a blinker bulb without removing the whole housing?

No, you need to remove the housing to access the bulb socket. The housing twists or pulls out in seconds, so it's not a difficult step. Once it's out, the bulb is straightforward to reach.

What if I can't find the bulb number on the old bulb?

Bring the old bulb to an auto parts store and show it to a staff member. They can match it by sight. You can also give them your car's year, make, and model, and they'll look up the correct bulb in their system.

Is there a difference between front and rear blinker bulbs?

Yes, they are usually different types. Front blinkers are often smaller than rear ones. That's why it's important to replace only the bulb that's actually burned out, or to check your manual before buying. Buying the wrong type wastes money and won't fit.

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

No. Blinker bulbs operate on low voltage and there's no risk of shock or damage. You can replace one with the car off and the battery connected.

Why do blinker bulbs burn out so often?

Blinker bulbs are used constantly and burn out faster than headlights or brake lights. They're also inexpensive, so manufacturers don't always use the longest-lasting filaments. This is normal—most cars need a new blinker bulb every one to three years depending on how much you drive.