1999-02 Mercury Grand Marquis Lighting Kit 4 Piece Set - 1ALHT00035

Frequently bought together

Warranty & Shipping
How-To & Tools
Product Reviews
Vehicle Fit

Part Details

  • Quantity:   4 Piece Set
  • Kit Includes:
      (2) Parking Lights
      (2) Headlights


  • Brand New Lighting Kit
  • Comes as a 4 Piece Kit
    • Fits LH (Driver Side) & RH (Passenger Side)
  • Direct replacement
  • Built to strict quality control standards
Direct Fit Replacement

Direct fit replacement for OEM assembly

Trouble-free Installation

Uses same wiring as original assembly.  No cutting or splicing required.

DOT and SAE Compliant

Meets federal regulations for on-road use

Item Condition: New

Attention California Customers:

WARNING:  This product can expose you to chemicals including Chromium (Hexavalent Compounds), which is known to the State of California to cause cancer, and birth defects or other reproductive harm.  For more information, go to

Lifetime Warranty

This item is backed by a Limited Lifetime Warranty. In the event this item should fail due to manufacturing defects during intended use, we will exchange the part free of charge (excludes shipping charges) for the original purchaser.

Bulb Note:

These lights do not include bulbs.  If you happen to receive a product with bulbs, the bulbs are for testing and not covered under our warranty.  Our warranty applies to the light assembly only.

  1. step : Removing the Headlight (0:50)
    • Remove the two clips in the panel above the headlights. Remove the Panel.
    • Pull the two clips on the back of the headlight.
    • Pull the headlight out.
    • Disconnect the harness by pulling up on the two tabs.
  2. step : Changing the Bulbs / Adjusting the Headlights (1:46)
    • Turn the ring and pull off.
    • Pull the bulb free.
    • Reverse procedure.
    • On the new headlight make the adjusters match the adjusters on the old headlight.
    • Hole the adjuster with an adjustable wrench and use pliers to turn the plastic piece until they match.
  3. step : Replacing the Headlights (2:36)
    • Put the signal light into the new headlight assembly
    • Reconnect the headlight.
    • Line the headlight up and push into place.
    • Replace the two clips on the back of the headlight.
    • Replace the panel.
    • Replace the two clips in the panel.

Tools needed for replacement:

    Pliers, Cutters & misc Wrenches

  • Adjustable Wrench
  • Channel-Lock Pliers

4.70/ 5.0
10 reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
work and fit great if I need parts again I will buy from this company very pleased
February 18, 2017
Still clear
Have had them installed on car for over 2 years now, and theyre still clear as the day I got them. Bulbs work great as well. I live in Florida, the state known to fog up headlights.
August 7, 2017
Headlight installation
A-1 Auto its a great place to buy replacement parts I installed my headlights and Corinne lights on my Grand Marquis with little effort thanks again A-1 Auto for your great service
March 26, 2018
Arrived very quickly, packed perfectly, fit perfectly. These headlights appear to be high-quality, and the bulbs are included also, that will save you at least $40. You most likely will need to adjust the beam at night. However, you can buy the tool at O’Reillys for $10. Ford makes a specialty tool for this headlight adjustment. It’s a very long, skinny, 4 mm socket used to adjust the headlight beams. Was very easy to install and adjust. I recommend these headlights if you need replacements. Also got the side markers which also fit perfectly.
August 17, 2018
Fit perfectly
Easy install, fit perfectly and work wonderfully. I will definitely be using 1a for further part needs.
November 14, 2018
New headlights for grand marquis
I inherited a 2001 Grand Marquis GS from my dad.this car has very low mileage and had been sitting outside for about 4 needed quite a bit of work and money to get back into a roadworthy cruise.the headlights were so faded I bit the bullet and found these on A1 227.00 cdn delivered it was a no brainer.very happy with this purchase.other than replacing 6 bulbs that needed to be its all brand new.thank you A1
February 25, 2019
Good quality
Good Quality and fot for the car. It makes the car look better then before.
March 9, 2019
Good product
Good quality parts made in China lets see how they hold up over time
March 11, 2019
screw hole stripped
Parts were ok the driver side headlight screw was stripped so light was moving around had to put bigger screw which started to crack the plastic glue seem to work to help crack put it in its not a ssnug as other side
July 14, 2019
Just what I needed
I have an old 2002 Marquis. The lights were oxidized, clearcoat trashed. Had tried to "revive" them a couple of times with no success. Didnt want to spend a ton of money on replacing the headlights. Stumbled onto 1As website and was shocked that I could get both headlights AND the side lights for $90 total, including shipped to my door. Placed the order and a few days the lights arrived. Watched their video online and within half an hour I had all of the lights replaced and they look and work great. Probably one of the best online purchases that Ive made. Glad I stumbled onto the website and have already passed the website along to at least a dozen friends and will continue to pass along to anyone who asks me about auto parts. Will be back to replace headlights on my Silverado soon.Just cant beat the price and service.
October 10, 2019
Will this fit my car? Add a vehicle to make sure
Customer Q&A
Ask a question to 1A Auto customers who purchased the product
What is the headlight assembly sealed with? Butyll or perma seal?
Michael V August 6, 2017
The replacement comes as a unit already together. I dont know how they put the individual parts of the unit together, but no additional parts are require to replace the unit. Just take out the old and install the new. No sealing required.
JERRY T August 6, 2017
Not very sure, but Ive had mine installed for over 2 years now and theyre still clear as day, if thats what your concern might be. The bulbs that come with it arent showing any signs of failing either.
Steven W August 7, 2017
Im not sure what they are sealed with but Ive had them for almost a year and have had NO problem with them at all. Great buy because Ive spent over $200 in the past years trying to clean my lights, so spending $100 for a full set of new ones was a no brainer.. You wont be sorry
Dwayne W August 7, 2017
Do these come with the Headlight Bulb Retainers?
Tyler M June 14, 2019
Andra M June 14, 2019
J H June 23, 2019
G A October 10, 2019
Year Make Model Description
1999-2002Mercury Grand Marquis Mercury Grand Marquis Lighting Kit 4 Piece Set
Part 1ALHT00035
In Stock

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Deliveries made to PO Boxes and FPO may take longer. See our Shipping & Delivery for more information.