How to Install Jeep JL Headlights: Step-by-Step Guide

Upgrading your Jeep Wrangler JL JT LED Headlight is one of the most popular modifications among Wrangler owners. Not only does it give your Jeep a modern, aggressive look, but it also improves visibility and safety during night driving or off-road adventures.

If you’ve recently purchased 9 inch LED headlight with DRL & turn signals, this guide will walk you through the complete installation process. It’s beginner-friendly, requires only basic tools, and can usually be completed in about 30–45 minutes.

Tools You’ll Need

Prepare the following tools before starting:

• Power Tool (optional, for faster installation)

• 1/4 Ratchet

• 1/4 Extension

• 10 mm Socket – for removing and reinstalling headlight bolts

• Metal Panel Popper – for removing grille clips

• Flat Screwdriver

⚠️ Note: When using power tools, always ensure that you do not overtighten the screws, as this can damage the mounting hardware or headlight housing.

Step-by-Step Installation

Step 1: Open the Hood

Lift and secure the hood to access the grille.

Step 2: Locate the Six Push Pins on Top of the Grille

Identify the six plastic push pins securing the top of the grille.

Step 3: Remove the Six Push Pins

Use the Metal Panel Popper or flat screwdriver to carefully pop out the push pins.

Step 4: Remove the Grille

Gently pull the grille towards you starting from the bottom corners.

Lift the grille with a gentle upward motion, releasing the lower clips. After disengaging the clips, carefully pull the grille out to complete the removal process. Set the grille aside for future re-installation.

Step 5: Remove the Headlight Bolts

Using 1/4 Ratchet + 10 mm Socket, remove the three bolts holding each headlight.

Step 6: Disconnect the Headlight Harness

Pull the headlight forward and disconnect the wiring harness from the back.

Step 7: Prepare the New Headlights

Take out your 9 inch LED headlight with DRL & turn signals and check the included hardware.

Step 8: Install the New Headlights

Reconnect the harness to the new headlights, then secure each headlight with the three 10 mm bolts using 1/4 Ratchet + 10 mm Socket.

Jeep JL Front Headlight Wiring Instructions

Left Front Headlight:

• Turn Signal (Turn): White/Green wire

• Parking Light (Park): White/Brown wire

• Daytime Running Light (DRL): White/Yellow wire

Right Front Headlight:

• Turn Signal (Turn): White/Brown wire

• Parking Light (Park): White/Orange wire

• Daytime Running Light (DRL): White/Dark Blue wire

📌 Usage Notes:

• Connect the LED headlight wires for Turn, Park, and DRL to the corresponding factory wires of the same color.

• Ensure all connections are secure to avoid any loose contact during driving.

• After wiring, test all functions to confirm Turn signals, Parking lights, and DRL operate correctly.

1.Begin by inserting and connecting the DRL wire into the headlight assembly. DO NOT USE DIELECTRIC GREASE!

2.Connect the headlight’s plug into the corresponding connector.

3.Next, link the turn signal yellow wire from the DRL harness to the headlight assembly.

Step 11: Reinstall the Six Push Pins

Insert all six push pins to secure the grille.

Final Product

Your Jeep Wrangler JL now features upgraded 9 inch LED headlights with DRL & turn signals. Test low beam, high beam, DRL, and turn signals to ensure everything functions correctly.

Congratulations! You have successfully installed the 9" Advanced Matrix High-Performance LED Headlight for your Jeep Wrangler JL & Gladiator JT.

FAQs

Q: Can I install JL headlights myself?
A: Most Jeep Wrangler JL JT LED Headlights are plug-and-play. If you can use basic tools, you can complete the installation at home.

Q: Will it affect my Jeep’s warranty?
A: Installing DOT/SAE-approved 9 inch LED headlights generally does not void the warranty.

Q: How do I adjust the headlight beam?
A: Use the adjustment screw on the back of the headlight assembly to set the correct height and angle.