INTERIOR LIGHT BULBS

Your vehicle may use several different automotive interior light bulbs throughout the cabin, cargo area, doors, console, and storage compartments. Although these bulbs are often small, they can vary considerably in size, base design, shape, electrical connection, and intended application.

A dome light bulb may be completely different from the bulb used in a map light, glove compartment, cargo area, vanity mirror, or courtesy light. Some newer vehicles also use integrated LED lighting that does not contain a conventional replaceable bulb.

ALBulbs helps you identify interior lighting fitment by matching your Year, Make, Model, and Configuration when available. Your results may include the lighting position, bulb number, verification information, standard replacement options, and available LED alternatives.

Find the Correct Interior Light Bulb for Your Vehicle

The easiest way to identify the interior bulbs used in your vehicle is with the ALBulbs Vehicle Finder.

Select your year, make, model, and available configuration, then review the interior lighting positions included in your results.

Depending on the vehicle, you may see positions such as:

• Dome Light
• Map Light
• Reading Light
• Glove Compartment Light
• Trunk Light
• Cargo Light
• Courtesy Light
• Door Light
• Step Light
• Vanity Mirror Light
• Console Light

Always check the exact position listed with the bulb number. A vehicle can use several different interior bulb sizes even when the bulbs appear similar.

Find My Interior Bulbs

Dome Light Bulbs

The dome light is usually one of the primary interior lights in a vehicle. It may illuminate when a door is opened, when the vehicle is unlocked, or when the driver manually activates the interior lighting.

Depending on the vehicle, the dome lamp may use a festoon-style bulb, wedge-base bulb, miniature bulb, or an integrated LED module.

Some vehicles have more than one dome or overhead lamp. The front and rear interior lights may also use different bulb sizes, so do not assume every overhead light uses the same bulb.

Map and Reading Light Bulbs

Map lights and reading lights are generally designed to provide more focused illumination for the driver or passengers. They are commonly mounted in the overhead console, near the rear-view mirror, or above the rear seating area.

Map lights may use a different bulb than the main dome light even when both are located inside the same overhead console.

If your vehicle has separate left and right map lights, verify the bulb number before ordering. The two sides will often use the same bulb, but the surrounding dome or console lighting may not.

Festoon Interior Bulbs

A festoon bulb is a common style used in automotive interior lighting. Instead of a wedge or round base, a festoon bulb has electrical contacts at both ends of a cylindrical bulb body.

Festoon bulbs are available in several lengths. Two festoon bulbs can look almost identical while being different enough in length that one will not fit securely in the lamp holder.

For this reason, matching the bulb designation is important. Do not select a replacement solely because it appears to have the same general shape.

Some festoon-style applications may use bulb numbers such as 578, 6418, or other application-specific designations.

Check the existing bulb and your ALBulbs fitment result before ordering.

Wedge-Base Interior Bulbs

Many interior lights use miniature wedge-base bulbs. These bulbs have electrical contacts formed along the sides of the base and are inserted directly into a socket.

Common wedge-style bulb families may be used in map lights, courtesy lights, cargo lamps, glove compartment lights, and other interior positions.

Although several wedge bulbs may fit into a similar-looking socket, differences in physical size, wattage, brightness, and application can matter. Always match the correct bulb number whenever possible.

For more information about automotive bulb numbering, visit the Automotive Bulb Size Guide.

Glove Compartment Lights

Some vehicles include a small lamp inside the glove compartment. This light may turn on automatically when the compartment door is opened.

Glove compartment bulbs are often smaller and lower-output than the main cabin lights. Depending on the design, access can also be more limited than with a dome or map light.

Before removing the bulb, allow it to cool if it has been illuminated for an extended period. Small incandescent bulbs can become hot during operation.

Trunk and Cargo Light Bulbs

Trunks, cargo areas, hatchbacks, vans, and SUVs may use one or more lamps to illuminate the storage area.

These positions may be identified as Trunk Light, Cargo Light, or a similar description in your ALBulbs results.

A cargo lamp may use the same bulb as another interior position, but that should not be assumed. The actual bulb can vary by body style and interior configuration.

For example, a sedan and hatchback sharing the same model name may use different rear interior lighting because the cargo areas are designed differently.

Door, Step, and Courtesy Light Bulbs

Courtesy lighting helps illuminate areas around the doors and entry points of the vehicle. These lights may be mounted in the door panel, lower dashboard, footwell, door sill, or another location.

Some courtesy lights also serve a safety function by making an open door more visible at night.

Depending on the vehicle, these lamps may use replaceable miniature bulbs or integrated LED assemblies.

Vanity Mirror Light Bulbs

Vehicles equipped with illuminated sun-visor mirrors may use one or more small bulbs around the vanity mirror.

These bulbs can differ from other interior lighting and may be packaged inside small housings with limited clearance.

When replacing a vanity mirror bulb, verify both the bulb size and the available physical space before installing a larger LED alternative.

LED Interior Light Bulbs

Interior lighting is a popular application for LED replacement bulbs. An LED alternative may produce a whiter appearance, use less electrical power, and provide a different level of brightness than the original incandescent bulb.

However, matching the physical base does not always guarantee perfect compatibility.

Possible LED compatibility considerations include:

• Electrical polarity
• Bulb length or width
• Clearance inside the lens or housing
• Dimming behavior
• Fade-in and fade-out behavior
• Vehicle bulb monitoring
• Color temperature
• Excessive brightness for the application

ALBulbs keeps the original bulb fitment separate from any LED Alternative that may be displayed.

An LED alternative is an additional option and does not change the original bulb number identified for the vehicle.

For additional information, read the Standard vs LED Bulbs and LED Compatibility guides.

LED Polarity and Interior Lighting

Some LED replacement bulbs are polarity-sensitive. This means electrical current must flow through the LED in the correct direction for the bulb to illuminate.

If a newly installed LED interior bulb does not light, the bulb may need to be removed, rotated, and reinstalled if the socket design allows it.

However, a non-working light can also be caused by an incorrect bulb, blown fuse, damaged socket, wiring issue, or another electrical problem. Do not assume polarity is always the cause.

Choosing an Interior LED Color Temperature

LED interior bulbs are available in several color temperatures. Some produce a warm white appearance similar to traditional incandescent lighting, while others produce a cooler or brighter white appearance.

Color temperature is largely a matter of preference for interior applications, but very cool or extremely bright bulbs can sometimes feel harsh inside a dark cabin.

When selecting an LED alternative, consider how the bulb will be used. A bright cargo-area bulb may be helpful, while the same level of output could be distracting in a small overhead map light.

Factory LED Interior Lighting

Many modern vehicles use integrated LED interior lamps instead of replaceable bulbs.

An integrated LED lamp may contain LEDs mounted directly to a circuit board inside the overhead console, door panel, footwell light, or other assembly.

If the LED source is integrated, there may not be a conventional bulb that can simply be removed and replaced.

Diagnosis may involve the LED module, lamp assembly, wiring, connector, control electronics, or another component.

Inspect the actual lamp before ordering a traditional replacement bulb if your vehicle appears to have factory LED interior lighting.

Why Interior Bulb Fitment Can Vary by Configuration

Interior lighting may differ between trim levels and equipment packages. A base model may have conventional incandescent dome and map lights, while a higher trim uses an upgraded LED interior lighting package.

Body style can also affect the lighting arrangement. Sedans, hatchbacks, wagons, vans, pickups, and SUVs may use different cargo or rear-seat lighting even when they share a model family.

When ALBulbs provides a configuration option, choose the version that most closely matches the equipment installed in your vehicle.

Understanding Your ALBulbs Interior Bulb Results

ALBulbs may display a verification label with an interior bulb fitment result.

• Not Verified — The result has supporting fitment information, but ALBulbs does not currently have enough qualifying confirmation to assign a higher verification level.
• Verified — The fitment has stronger supporting evidence, such as qualifying manufacturer information or confirmation from multiple sources.
• Cross-Checked Verified — The fitment has a higher level of independent supporting confirmation.

A Not Verified result does not automatically mean the bulb is incorrect. It means additional confirmation is recommended before purchasing.

Visit Understanding Your Results for more information about verification levels, fitment notes, standard replacements, and LED alternatives.

Check the Existing Interior Bulb Before Ordering

Whenever possible, inspect the bulb already installed in the vehicle before purchasing a replacement.

Check the bulb number, physical dimensions, base style, socket, and lighting position.

This is particularly important when:

• Your vehicle has multiple interior lighting configurations
• Your result is marked Not Verified
• The interior lighting has been modified
• An aftermarket lamp assembly has been installed
• You are converting from incandescent to LED

Festoon bulbs deserve additional attention because physical length can be critical to proper fitment.

If the bulb currently installed does not match the ALBulbs result, investigate the difference before ordering a replacement.

What If the Interior Light Still Does Not Work?

If replacing the bulb does not restore the interior light, the problem may not be the bulb.

Possible causes can include:

• A blown fuse
• A damaged bulb socket
• Corrosion
• A loose electrical connection
• A door switch or latch sensor problem
• Wiring damage
• A dimmer or interior light control setting
• A vehicle control module issue

If several interior lights stop working at the same time, checking the related fuse, controls, and electrical circuit may be more useful than replacing multiple bulbs.

Interior Bulb Fitment Matters

Interior bulbs may seem simple compared with headlights or exterior signal lamps, but using the correct bulb is still important.

An incorrect bulb may not fit securely, may be too long for the housing, may produce excessive heat, or may interfere with the lens or electrical contacts.

With LED alternatives, physical clearance and electrical behavior can also affect whether the replacement works properly.

ALBulbs is designed to connect the vehicle, lighting position, bulb number, supporting fitment information, and available replacement options so you can make a more informed decision.

Find Your Interior Light Bulbs

Ready to look up the interior lighting for your vehicle? Use the ALBulbs Vehicle Finder to select your year, make, model, and available configuration.

Your results may include dome lights, map lights, glove compartment lights, courtesy lights, cargo lights, and other interior positions along with bulb numbers, verification information, standard replacement options, and available LED alternatives.

Find My Bulbs

If your vehicle uses a different interior bulb than the one shown in ALBulbs, visit Report Incorrect Fitment. Providing the vehicle, lighting position, and actual bulb number can help us review and improve the fitment information.

Find the right bulb. Every time.