Turn Off Power Before You Touch Anything

The first step is to cut power to the light at the breaker box or wall switch. If you are not sure which breaker controls the outdoor light, flip the switch off and leave it off while you work. This prevents electric shock if you accidentally touch a live wire or metal contact inside the fixture.

Wait a few minutes after switching off power. Some bulbs stay hot for several minutes after the power cuts, especially halogen bulbs. Touch the fixture lightly with the back of your hand first—if it is still warm, wait longer before handling the bulb.

Key Takeaways

  • Always turn off power at the switch or breaker before removing any outdoor bulb, and wait for the fixture to cool.
  • Check the wattage and base type printed on the old bulb or inside the fixture before buying a replacement.
  • Wear gloves when handling halogen bulbs to avoid skin oils that can shorten bulb life or cause failure.
  • Screw incandescent and LED bulbs clockwise until snug; do not force them, as the socket can crack.
  • Test the light by turning power back on, and if it does not work, check that the bulb is fully seated in the socket.

Find Out What Type and Wattage Your Fixture Needs

Look at the old bulb before you remove it. The base of the bulb shows the wattage (usually 40, 60, or 100 watts) and the type of base—most outdoor fixtures use either a standard screw base (E26) or a smaller candelabra base (E12). Write down both numbers.

If the old bulb is missing or broken, check inside the fixture itself. Most fixtures have a label or stamp showing the maximum wattage. Never install a bulb with higher wattage than the fixture allows—it can overheat the socket and create a fire risk. If you cannot find the information, take a photo of the fixture and bring it to a hardware store; staff can identify the base type and recommend the correct wattage.

Remove the Old Bulb

For a screw-base bulb, turn it counterclockwise (left) until it comes free from the socket. Use a gentle, steady motion—do not jerk or twist hard, as this can break the bulb or damage the socket. If the bulb is stuck, try wrapping a rubber band around it for better grip, or use a bulb removal tool (a small suction cup on a handle, sold at hardware stores for a few dollars).

For a bayonet-base bulb (less common outdoors, but found on some fixtures), push the bulb straight in slightly and turn it counterclockwise about a quarter turn until the pins align with the slots. Then pull straight out. Set the old bulb aside safely—if it is broken, wrap it in newspaper to avoid cuts.

Install the New Bulb

If the new bulb is halogen, wear cotton gloves or use a clean cloth to handle it. Skin oils on halogen bulbs can cause hot spots that shorten the bulb's life or cause it to fail suddenly. Do not touch the glass part of the bulb with bare hands.

For a screw-base bulb, insert it into the socket and turn clockwise (right) until it is snug. You should feel slight resistance, but do not force it—the socket is fragile and will crack if you overtighten. The bulb should sit flush in the fixture with no gaps. For a bayonet base, align the pins with the slots, push straight in, and turn clockwise about a quarter turn until you feel it lock.

Test the Light and Troubleshoot

Turn the power back on at the switch or breaker. The light should come on when ready. If it does not, turn the power off again and check that the bulb is fully seated—sometimes a bulb that looks installed is actually just resting in the socket without making full contact. Remove it, look inside the socket for any debris or corrosion, and reinstall it firmly.

If the light still does not work after reinstalling the bulb, the problem is likely the fixture itself, not the bulb. Try the old bulb in the socket (if it is not broken) to confirm the fixture is working. If the old bulb works but the new one does not, the new bulb may be defective—return it to the store where you bought it.

Weatherproof the Fixture

Outdoor fixtures are exposed to rain, dust, and temperature swings. After installing the new bulb, check that the fixture cover or globe is clean and sits properly. If there is a rubber gasket or seal around the cover, make sure it is not cracked or missing—a damaged seal lets water into the socket and can cause corrosion or short circuits.

If the fixture has a removable cover, wipe the inside with a dry cloth before closing it. Dust and moisture inside the fixture can reduce light output and shorten bulb life. If you see rust or corrosion inside, spray it lightly with a moisture-displacing lubricant (like WD-40) and let it dry before reinstalling the cover.

Choose the Right Bulb Type for Your Climate

Incandescent bulbs work in most outdoor fixtures but are less efficient and burn out faster than LED bulbs. They also generate heat, which can be a problem in enclosed fixtures or in very hot climates. LED bulbs last much longer (often 10 to 25 years) and use less electricity, but they cost more upfront. Most outdoor LED bulbs are rated for cold weather and work well in freezing temperatures, unlike some indoor LEDs.

If your fixture is exposed to salt spray (near the ocean) or high humidity, choose a bulb rated for wet locations. Check the packaging—it will say "wet location" or "damp location." Standard bulbs in these environments corrode faster and fail sooner. If your fixture is in a very cold climate, check that the LED bulb is rated for the lowest temperature your area reaches; some LEDs dim or fail in extreme cold.

Frequently Asked Questions

Can I replace an outdoor bulb while the power is on?

No. Always turn off power at the switch or breaker before touching the bulb or fixture. Even if the light is off, power is still flowing to the socket, and touching a live contact can cause serious shock. Turning off power takes seconds and is the safest approach.

What if the bulb is stuck and won't turn?

Stop turning when ready—forcing it can break the bulb or crack the socket. Wrap a rubber band around the bulb for grip, or use a bulb removal tool. If it is still stuck, spray a small amount of penetrating oil (like WD-40) around the base where the bulb meets the socket, wait 10 minutes, and try again gently. If it remains stuck, contact an electrician.

Why does my new LED bulb flicker or dim?

LED bulbs are sensitive to loose connections. Turn off power, remove the bulb, and reinstall it firmly—make sure it is fully seated. If flickering continues, the fixture may have a dimmer switch that is not compatible with that LED bulb. Check the bulb's packaging to see if it is dimmable, and replace it with one that matches your fixture's controls.

Is it safe to use a higher wattage bulb than the fixture says?

No. The wattage limit is set based on how much heat the socket and wiring can handle. A bulb that is too powerful will overheat the socket, melt the insulation on the wires, and create a fire risk. Always use the wattage the fixture specifies or lower.

How often should I replace outdoor bulbs?

Incandescent bulbs typically last 1,000 hours, which is roughly 6 to 12 months of nightly use. LED bulbs last 10,000 to 25,000 hours or more, so you may not need to replace them for several years. Halogen bulbs last 2,000 to 4,000 hours. Harsh weather, frequent on-off switching, and power surges shorten bulb life.