What is the low beam headlight bulb size for a 1994 Mercury Grand Marquis?

The 1994 Mercury Grand Marquis uses a 9006 bulb for the low beam headlights. We recommend upgrading to LED for better visibility.

What is the high beam headlight bulb size for a 1994 Mercury Grand Marquis?

The high beam bulb size for the 1994 Mercury Grand Marquis is 9005.

Why are my 1994 Mercury Grand Marquis headlights dim?

Dim headlights on a 1994 Mercury Grand Marquis can be caused by aging halogen bulbs, which lose brightness over time, or oxidation (cloudiness) on the plastic headlight lenses. Upgrading to a 9006 LED conversion kit can provide a significantly brighter and whiter light output.

Which bulb fits the 1994 Mercury Grand Marquis fog light?

The 1994 Mercury Grand Marquis typically does not come with factory fog lights in all trim levels. If your vehicle is equipped with them, check the manual as sizes can vary by trim.

Is the 1994 Mercury Grand Marquis single or dual beam?

The 1994 Mercury Grand Marquis uses a dual bulb headlight system. This means you have separate bulbs for high and low beams.

Can I install LED bulbs on my 1994 Mercury Grand Marquis?

Yes, the 1994 Mercury Grand Marquis comes with standard halogen bulbs from the factory, but they can be upgraded to LED. You will need a 9006 LED conversion kit for the low beams.

Did the 1994 Mercury Grand Marquis change headlight bulb sizes from the previous year?

Yes — the 1994 Mercury Grand Marquis uses different bulb sizes than the 1993 model. The 1994 generation introduced this bulb configuration.

Is the 1994 Mercury Grand Marquis the first or last year to use 9006 bulbs?

The 1994 Mercury Grand Marquis is the only year in the 1994 generation to use the 9006 bulb for the low beam headlight.

How do I change the headlight on a 1994 Mercury Grand Marquis?

Turn off the vehicle and open the hood. Locate the headlight assembly from behind, remove the dust cover or retaining clip, disconnect the wiring harness, twist the old 9006 bulb counter-clockwise to remove it, then insert the new bulb and reassemble. The whole process typically takes 10 to 30 minutes per side depending on accessibility.

Are LED headlights legal for a 1994 Mercury Grand Marquis?

LED bulbs used off-road or in auxiliary lights are legal everywhere. For on-road headlight use, legality varies by state. Many states allow LED retrofits as long as the beam pattern meets DOT standards. For the best legal compliance, choose a DOT-approved 9006 LED kit that is designed as a direct replacement and produces a proper cutoff pattern without excessive glare.

How much does it cost to replace 1994 Mercury Grand Marquis headlights?

A pair of halogen 9006 bulbs costs $15 to $40, while LED conversion kits run $25 to $60 per pair. If you have a shop do the work, expect an additional $20 to $50 in labor per bulb. Replacing them yourself at home saves the labor cost and usually takes under 30 minutes.

What is the difference between halogen and LED for a 1994 Mercury Grand Marquis?

Halogen bulbs produce a warm yellow light (around 3200K), last 500 to 1000 hours, and draw more power. LED bulbs emit a brighter white light (5000-6000K), last 25,000+ hours, and use less energy. LED upgrades for the 9006 position are available as direct plug-and-play replacements.

The 1994 Mercury Grand Marquis has a unique bulb configuration not shared with adjacent model years.

Fitment Guaranteed for 1994 Mercury Grand Marquis

What Size Bulbs Does a 1994 Mercury Grand Marquis Use?

Correct headlight, fog light, and tail light bulb sizes. Sourced from OEM catalog data.

Installation Difficulty

Easy (Plug and Play)

Est. Replacement Cost

$15 - $40 (Halogen) / $30+ (LED)

What Lighting System Does the 1994 Mercury Grand Marquis Have?

The 1994 Mercury Grand Marquis utilizes a refined lighting configuration featuring 13 distinct bulb positions. It features an extensive lighting system powered by a dual-bulb halogen configuration using separate 9006 low beam and 9005 high beam bulbs for precise light distribution.

Can You Put LED Bulbs in a 1994 Mercury Grand Marquis?

Upgrading to LED is one of the most effective ways to modernize your Mercury's appearance and safety profile. We recommend starting your upgrade with the 9006 low beams, as they see the most use. Adding a matching 9005 LED kit later will complete the look and ensure consistent lighting performance.

1994 Mercury Grand Marquis Bulb Size Chart

Position	Bulb Size	Shop
High Beam	9005	Buy 9005 →
Turn Signal Front	3157CK	Buy 3157CK →
Low Beam	9006	Buy 9006 →
Brake Light	3157CK	Buy 3157CK →
Side Marker	194	Buy 194 →
Turn Signal Rear	3157CK	Buy 3157CK →
Tail Light	3157CK	Buy 3157CK →
License Plate	194	Buy 194 →
Parking Light	916NA	Buy 916NA →
Reverse Light	3156	Buy 3156 →
Dome Light	906	Buy 906 →
Trunk Light	906	Buy 906 →
Map Light	168	Buy 168 →