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How to Replace Tail Light 98-02 Mercury Grand Marquis

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  1. step : Removing the Taillight (0:33)
    • Pull up the panel at the trunk opening.
    • Remove the thumb screw.
    • Pull back the trim.
    • Remove the three 11mm nuts on the back of the taillight.
    • Disconnect the connector.
    • Pull the taillight out and off.
  2. step : Changing a Bulb (1:59)
    • Twist the socket out.
    • Pull the bulb straight out.
    • Push a new bulb in.
    • Twist the socket in.
  3. step : Replacing the Taillight (2:11)
    • Remove the sockets from the old taillight.
    • Twist the sockets into the new taillight assembly.
    • Feed the harness through the car.
    • Line up the taillight and press it into place.
    • Reconnect the connector.
    • Replace the nuts.
    • Replace the trim.
    • Replace the thumb screws.
    • Push the trunk panel back into place.

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Hi, I'm Mike from 1A Auto and I hope this How To Video helps you out. The next time you need parts for your vehicle, think of

In this video, we're going to show you how to service the taillight on this 2000 Mercury Grand Marquis, same as a '98 to '02. The only tool you're going to need is an 11mm wrench or a socket and ratchet.

Okay, to service the taillight, you want to start here in your trunk. Okay there are a couple of pins holding this panel. You just want to pull firmly, shake it up and down, until they come out. Okay, now you can pull - there is a kind of grommet holding this right here, twist that off. I am going to fast forward there as I pull that trim panel back. There are three 11mm nuts that hold the taillight in. You can use an 11mm wrench and just as soon as you loosen them a few turns, they come right off by hand. And then, once you have those out, then your connector is right down below. Okay, right down here is your connector. You press a little tab right here and disconnect the light. And now just pull the light straight back and pull the wiring grommet right through and there's your light out. If you are just looking to change bulbs, just turn it clockwise and the bulbs will pull right out of their sockets. Push back in and do the same for these other two.

There is your harness separate from the light. If you get your light from 1A Auto, it comes with the chrome and everything and a nice gasket that makes a very nice replacement. You will want to take your harness. Okay, put the lights in and then turn clockwise to lock. Just note that the light with the long kind of extension - you can see how the bulb goes into a long extension - that goes on the bottom receptacle there. Fish it through and push through with one hand, pull the grommet through with the other, put it back in place. And you just kind of push it right down through and pull this back a little bit. I am looking right down here and I can see that the stud is down there - let's do this one here. It's just a matter of getting them into the right slot and in place. Pull down and reconnect our connector. And I am going to fast forward here, as first I just thread each nut on by hand, then tighten them up with a wrench. You want to tighten them nice and firm, don't over tighten them as you could actually break the taillight, if you make them too tight. And then after that, put the insulation back, put the little knob on that holds it in the upper corner, and then put the trunk opening trim back in place.

We hope this helps you out. Brought to you by, your source for quality replacement parts and the best service on the internet. Please feel free to call us toll free 888-844-3393. We are the company that's here for you on the internet and in person.

Tools needed for replacement:

    Ratchets & Related

  • Ratchet

  • Sockets - Metric

  • 11mm Socket

1998 - 2002  Mercury  Grand Marquis

99-02 Grand Marquis TL RH

1998-02 Mercury Grand Marquis Passenger Side Tail Light 3 Bulb Socket DEPO

This part replaces:

  • Partslink FO2801155
  • Hollander 166-1767AR
  • TYC 11-5373-01
  • DEPO 331-1966R-US
  • OE # F8MZ 13404 AA

Part Details

  • Light Option: 3 Bulb Socket
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