What is the low beam headlight bulb size for a 1990 Plymouth Laser?

The 1990 Plymouth Laser uses a H4666 bulb for the low beam headlights. We recommend upgrading to LED for better visibility.

What is the high beam headlight bulb size for a 1990 Plymouth Laser?

The high beam bulb size for the 1990 Plymouth Laser is 194.

Why are my 1990 Plymouth Laser headlights dim?

Dim headlights on a 1990 Plymouth Laser can be caused by aging halogen bulbs, which lose brightness over time, or oxidation (cloudiness) on the plastic headlight lenses. Upgrading to a H4666 LED conversion kit can provide a significantly brighter and whiter light output.

Which bulb fits the 1990 Plymouth Laser fog light?

The 1990 Plymouth Laser 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 1990 Plymouth Laser single or dual beam?

The 1990 Plymouth Laser uses a dual bulb headlight system. This means you have separate bulbs for high and low beams.

Can I install LED bulbs on my 1990 Plymouth Laser?

Yes, the 1990 Plymouth Laser comes with standard halogen bulbs from the factory, but they can be upgraded to LED. You will need a H4666 LED conversion kit for the low beams.

How do I change the headlight on a 1990 Plymouth Laser?

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 H4666 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 1990 Plymouth Laser?

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 H4666 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 1990 Plymouth Laser headlights?

A pair of halogen H4666 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 1990 Plymouth Laser?

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 H4666 position are available as direct plug-and-play replacements.

The 1990 Plymouth Laser has a unique bulb configuration not shared with adjacent model years.

Fitment Guaranteed for 1990 Plymouth Laser

What Size Bulbs Does a 1990 Plymouth Laser 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 1990 Plymouth Laser Have?

Lighting on the 1990 Plymouth Laser is managed by a total of 8 bulbs, covering everything from primary headlights to signal indicators. It features a comprehensive lighting system powered by a dual-bulb halogen configuration using separate H4666 low beam and 194 high beam bulbs for precise light distribution. This model belongs to the early years of the Laser's 1990-1994 production span.

Can You Put LED Bulbs in a 1990 Plymouth Laser?

Upgrading to LED is one of the most effective ways to modernize your Plymouth's appearance and safety profile. We recommend starting your upgrade with the H4666 low beams, as they see the most use. Adding a matching 194 LED kit later will complete the look and ensure consistent lighting performance.

1990 Plymouth Laser Bulb Size Chart

Position	Bulb Size	Shop
Low Beam	H4666	Buy H4666 →
Side Marker	168	Buy 168 →
Reverse Light	1156	Buy 1156 →
License Plate	168	Buy 168 →
Brake Light	921	Buy 921 →
High Beam	194	Buy 194 →
Trunk Light	912	Buy 912 →
Map Light	168	Buy 168 →

How do the 1990 Plymouth Laser's bulbs compare to other years?

The 1991 model switched to a different bulb configuration.

This bulb configuration covers the 1990 model years. 1991 →

Finding the best installation guide...

Other Laser Years

1994 1993 1992 1991

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Other Vehicles That Use H4666 Bulbs

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