1A Auto Video Library
Our how-to videos have helped repair over 100 million vehicles.

How to Replace Headlights and Bulbs 00-04 Toyota Tundra

Share on:

How to Replace Headlights and Bulbs 00-04 Toyota Tundra

Created on: 2014-03-05

Does your 00-04 Toyota Tundra have dim headlights? Change the bulbs, or replace the headlights. Learn how to do both in this video from 1A Auto!

  1. step 1 :Change the bulbs
    • To just change the bulbs, pop the hood.
    • Reach behind the headlight assembly and unplug the bulb and disconnect the wiring harness.
    • You will have to pull a rubber boot out of the way to get at the bulb and unclip a wire clip.
  2. step 2 :Replace the head light assembly
    • Use a Phillips screwdriver and a flat blade screwdriver to remove the push clip at the top corner of the headlight assembly.
    • Pull the parking light out and disconnect the parking light.
    • Remove the bulb and transfer it to the new parking light assembly.
    • Unbolt the 10 mm bolt and three 10 mm nuts anchoring the headlight assembly.
    • Unplug the wiring harness and remove the bulbs and transfer them to the new headlight assembly.
  3. step 3 :Install the new headlight and parking light assemblies.
    • Plug in the wiring harness to the headlight assembly.
    • Anchor it with the three nuts and the one 10 mm bolts.
    • Plug in the wiring harness to the parking light and mount it into the vehicle.
    • Secure it with the push clip by inserting the body of the clip into place and pushing the center down to lock it.

Tools needed for replacement

  • Ratchets & Related


  • Screwdrivers & Related

    Flat Blade Screwdriver

    Phillips Head Screwdriver

  • Sockets - Metric

    10mm Socket

Installation Video
Watch video

Brought to you by, your source for quality replacement parts and the best service on the internet. Hi, I'm Mike Green. I'm one of the owners of 1A Auto. I want to help you save time and money repairing and maintaining your vehicle. I'm going to use my 20+ years' experience restoring and repairing cars and trucks like this to show you the correct way to install parts from The right parts installed correctly, that's going to save you time and money. Thank you and enjoy the video.

In this video I'm going to show you how to replace the headlights both just do the bulbs as well as replace the whole headlight assemblies on this '02 Toyota Tundra. Tools you will need are a 10mm socket with a ratchet and extension, as well as a Phillips and flat blade screwdriver. If you're just looking to replace a bulb I'll come right in behind and there's a connector right here. This connector you want to shake up and down, side-to-side, and then eventually it will pull off. Let's get this connector off, and then this boot here you can pull it up and off and I can see my bulb is already loose in here. Then once you get this back see this piece of wire here my fingers on press that wire up and out and then once this boot comes off your bulb comes up and out. To put it back in, pull the wire out of the way, put your bulb back in, push the wire down, and lock it in place. Take your boot and put it back in place, and then you take your connector and plug the light back in. Maybe you are looking to replace the whole headlight assembly because maybe you got in a little accident or something and broke one of the headlights. Or maybe you're looking to take your truck looking from this to more like something like this. Let's look at that again. Here's our truck before with the old lights, and now after with a new set of lights from 1A Auto.

Really in just about 45 minutes to an hour you can do this with basic tools and you really take miles off the front of your truck. Use a Phillips screwdriver. Kind of work it into this screw bit and turn a little bit, and then use a flat blade screwdriver and pry it up. This center should come up first and then the whole clip should come out. Once you have that out, you want to pull on the light and you can kind of shake it loose. If you pull really firmly, it comes forward. Then around back here is your connector. You can press the button and disconnect the bulb. Now to remove your headlight, there are four fasteners; a 10mm bolt here, a 10mm nut down here, and then two 10mm nuts over here; one there, and one there. I'm going to fast forward as I remove that bolt and the three nuts. Once those bolts are out, lift up on this side of the light, lift up on the inside of the light. The light comes out. Remove your connector.

Your headlight from 1A Auto will go right in and connect to your connector. Put the light in. Put it down on these two studs over here first. Go onto this one and then up there. We'll speed it up again here as I put those nuts and bolts on by hand first and then tighten them up nice and snug. You don't have to have them too tight just enough to hold the light together. When you're putting it back in, this tab here in the fender goes between this tab here so plug your bolt in. Feed it in and kind of look back here and see how it's going in. Make sure it's pressed against the light. Make sure it is up on top there. Clips right in. Take your little top clip push it together down in and you're all set.

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're the company that's here for you on the internet and in person.

Tools needed for replacement:

    Ratchets & Related

  • Ratchet

  • Screwdrivers & Related

  • Flat Blade Screwdriver
  • Phillips Head Screwdriver

  • Sockets - Metric

  • 10mm Socket

2000 - 2003  Toyota  Tundra
2004 - 2004  Toyota  Tundra
2003 - 2003  Toyota  Tundra
2000 - 2002  Toyota  Tundra
Search Videos
Go To Top

Same Day Shipping

Need your part faster? Choose expedited shipping at checkout.

Guaranteed To Fit

Highest quality, direct fit replacement auto parts enforced to the strictest product standards.

USA Customer Support

Exceeding customers' expectations, our team of passionate auto enthusiasts are here to help.

Instructional Video Library

Thousands of how-to auto repair videos to guide you step-by-step through your repair.