Blue LED-halo Black sealed-beam H4 conversion listed for Mercury Grand Marquis 1985-1989. Verify year, factory headlight size/layout, mounting, H4 connector and wiring before ordering.

Fitment & Configuration

Listed application: Mercury Grand Marquis 1985-1989. The live title identifies the Blue LED Halo Black projector version. Other years, models and headlight layouts are not confirmed.

Source-Supported Details

The source lists metal conversion housings, glass lenses, 12V operation, a standard H4 plug and H4 bulbs.

Installation & Compliance

The source estimates 30-90 minutes, notes minor trimming may be required and recommends professional installation. Verify lighting function, headlight aim and applicable local, state and federal lighting requirements, including restrictions on blue accent or halo lighting, before public-road use.

Frequently Asked Questions

Which vehicle is listed?

Mercury Grand Marquis 1985-1989.

What bulb format is listed?

Replaceable H4 bulbs with a standard H4 plug.

What should I verify before ordering?

Year/model, factory headlight size/layout, mounting, H4 connector and wiring.

What should I check after installation?

Lighting function, headlight aim and applicable lighting rules, including any restrictions on blue halo lighting.

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Vehicle names are used only to identify the listed application. People Auto Parts is not affiliated with or endorsed by the vehicle manufacturer.