1979-1986 Mustang RMS 4x6 (Gen3) Small Square Headlight Conversion Kit

Classic Factory Look. Modern Projector Performance.

Upgrade your factory sealed beam headlights with modern projector-style LED performance without sacrificing the original appearance of your vehicle.

The RMS Lighting Gen3PRO 4x6 Headlight Conversion Kit combines OE-style glass headlight housings with H4 Mini Projector LED bulbs to produce excellent nighttime visibility with a cleaner, more controlled beam pattern and sharper cutoff line.

Designed specifically for classic cars and trucks equipped with quad 4x6 rectangular sealed beam headlights, the Gen3PRO gives you modern projector-style lighting performance while maintaining the traditional factory headlight appearance.

What Makes the Gen3PRO Different?

The biggest difference between the Gen2 and Gen3PRO kits is the LED bulb technology.

The Gen3PRO features H4 Mini Projector LED bulbs that help produce a cleaner, more focused beam pattern with a crisp projector-style cutoff line.

Compared with conventional reflector-style LED replacement bulbs, the Mini Projector design provides better-controlled light output, improved road illumination, and reduced unwanted light scatter.

You get modern projector-style performance hidden behind a classic OE-style glass headlight.

Classic Look. Modern Projector Performance.

Kit Includes

• (4) Gen3PRO 4x6 Glass Headlight Housings

• (4) 10,000LM H4 Mini Projector LED Bulbs – 6500K Cool White

• (2) Plug-and-Play Harness Adapters

• Adapters connect H4 3-prong bulbs to factory 2-prong high beam connectors

• 2-Year Warranty on LED Bulbs

H4 Mini Projector LED Bulb Specifications

• Bulb Type: H4 Mini Projector LED

• Light Output: 10,000 Lumens per Bulb

• Power: 50 Watts

• Color Temperature: 6500K Cool White

• Operating Voltage: 12V DC

• Mini Projector LED Design

• Adjustable Rotating Bulb Base

• Active Cooling Fan

• Waterproof Rating: IP68

• Operating Temperature: -40°C to +85°C

• Warranty: 2 Years

Cleaner Beam Pattern & Sharper Cutoff

The H4 Mini Projector LED bulbs are designed to produce a more defined beam pattern and sharper cutoff line than conventional reflector-style LED replacement bulbs.

The more controlled light output helps put illumination where it's needed on the road while reducing unwanted light scatter.

The adjustable rotating bulb base allows the projector to be properly positioned for optimal beam alignment and performance.

Keep the Original Factory Look

One of the biggest advantages of the RMS Lighting Gen3PRO kit is that you don't have to install modern-looking LED headlight assemblies to get modern lighting performance.

From the outside, you retain the appearance of traditional 4x6 rectangular glass sealed beam headlights.

Behind the glass, you get the benefits of H4 Mini Projector LED technology.

It's an ideal combination for restorations, restomods, and classic vehicles where maintaining the original appearance matters.

Real Glass Lenses – Not Plastic

RMS Lighting Gen3PRO housings feature real OE-style glass lenses.

Unlike many inexpensive conversion kits that use plastic lenses, glass maintains its clarity and will not yellow or haze like plastic lenses over time.

The result is a durable headlight conversion that maintains the clean, classic appearance enthusiasts expect.

True Plug & Play Installation

The Gen3PRO kit is designed for a straightforward installation on compatible quad 4x6 sealed beam applications.

The included harness adapters allow the 3-prong H4 LED bulbs to connect to factory 2-prong high beam connectors without cutting or splicing your original wiring.

No cutting. No splicing. No permanent modifications.