Upgrading to LED headlight bulbs is a practical and stylish improvement that enhances nighttime visibility while lending your vehicle a more contemporary appearance. Transitioning from standard halogen to 9003 LED headlight bulbs is a relatively simple process that, with the proper tools and understanding, can be completed in under half an hour.

In the following guide, we’ll walk you through each step of the installation process to help you enhance both the performance and aesthetics of your headlights.

Tools and Materials Required for 9003 LED Headlight Bulb Replacement

What You Need:

A pair of new 9003 LED headlight bulbs

Protective gloves

A clean cloth or towel

Flathead screwdriver

Safety glasses (optional)

Flashlight (optional)

Estimated Time:

Approximately 30 minutes

Before You Begin:

Ensure the vehicle is completely turned off and the keys are removed from the ignition.

Allow the headlights to cool down before handling any components.

How to Replace 9003/H4 LED Headlight Bulb (Step-by-Step)

Step 1: Open the Hood

Pop the hood of your car and secure it with the hood latch. Then locate the back of your headlight assembly. Pull the plug and then remove the rubber ring that protects the back of your headlight.

Step 2: Remove the Old Halogen Bulb

Gently push down and open on the clip that secures the old bulb, then take out the old bulb and set it aside.

Step 3: Install the New 9003 H4 LED Bulb

Rotate and separate the ring of the LED 9003 headlight bulb and insert the ring to the headlight assembly, and then lock in the clip, then put the rubber ring back on.

Insert the new 9003 H4 LED headlight bulb into the slot and then clockwise rotate.

Step 4: Connect the Plug and Reassemble the Headlight

Connect the three-wire plug that was removed earlier and reassemble your headlight assembly.

Close the hood of your car.

Step 5: Test the New Headlight Bulbs

After installing the two new LED 9003 LED headlight bulbs, test the new LED bulb by turning on your headlights. Check both the high and low beams to ensure that they are working correctly. You should also check the alignment of the headlight beam by shining it against a wall and making sure that it’s focused and not pointed too high or too low.

Where to Get New 9003 H4 LED Headlight Bulbs

Ready to replace those outdated halogen bulbs with something brighter and more efficient? SEALIGHT offers a comprehensive range of 9003 and H4 LED headlight bulbs designed to enhance your nighttime visibility. Whether you're looking for a cost-effective upgrade like the S1 Series or aiming for top-tier brightness with the premium S7S Series, SEALIGHT has a solution tailored to your needs.

Every purchase includes free shipping and a 90-day return policy, making your upgrade risk-free. When it comes to automotive lighting, SEALIGHT is a name drivers trust.