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

Upgrading your Jeep Wrangler JL or Gladiator JT with new LED headlights is one of the most rewarding mods you can do. It not only gives your Jeep a modern, aggressive look, but also greatly enhances nighttime visibility and off-road safety.

If you’ve just purchased 9” LED headlights with DRL and turn signal functions, this guide will walk you through every step of the installation. It’s easy, beginner-friendly, and typically takes 30–45 minutes to complete using just a few basic tools.

🔧 Tools You’ll Need

Make sure you have the following tools ready before you begin:

• 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

• ⚠️ Pro Tip: Be careful not to overtighten any bolts when using power tools. Excessive torque may damage the headlight housing or mounting points.

🚙 Step-by-Step Installation

Step 1: Open the Hood

Pop the hood open and secure it properly to gain full access to the grille area.

Step 2: Locate the Six Push Pins

You’ll find six plastic push pins along the top of the grille. These hold the upper grille section in place.

Step 3: Remove the Push Pins

Use the Metal Panel Popper or a flat screwdriver to carefully lift and remove all six pins. Keep them in a safe place for reinstallation later.

Step 4: Remove the Grille

Start pulling the grille outward gently from the bottom corners.
Once the lower clips release, lift the grille slightly upward to detach it completely.
Set the grille aside for reinstallation after the headlights are mounted.

Step 5: Remove the Factory Headlights

Use the 1/4" Ratchet with a 10 mm Socket to remove the three bolts securing each headlight.
Once loosened, pull the headlight slightly forward.

Step 6: Disconnect the Headlight Harness

Unplug the factory headlight wiring harness from the back of the housing.
This will free the old headlight completely.

Step 7: Prepare Your New LED Headlights

Take out your 9” LED headlights with DRL & turn signals and confirm that all parts and wires are included.
Check the connectors to ensure they match your factory plugs.

Step 8: Connect and Install the New Headlights

Plug the main headlight connector into the Jeep’s factory harness.
Align the mounting holes and secure each headlight using the three 10 mm bolts you previously removed.

⚡ Jeep JL Headlight Wiring Guide

Left Headlight

• Turn Signal: White/Green

• Parking Light: White/Brown

• DRL: White/Yellow

Right Headlight

• Turn Signal: White/Brown

• Parking Light: White/Orange

• DRL: White/Dark Blue

✅ Tip: Match each wire color correctly and make sure all connections are secure. After wiring, test DRL, turn signals, and parking lights to confirm proper function before final assembly.

🚫 Important: Do NOT use dielectric grease when connecting the DRL wire—it can interfere with conductivity.

Step 9: Secure the Headlights

Once all wires are connected and tested, tighten the bolts firmly but not excessively.
Repeat the process for the other side.

Step 10: Reinstall the Grille

Align the grille with the clips and gently press it back into place until all clips snap securely.

Step 11: Reinstall the Push Pins

Insert and press down all six push pins along the top of the grille to finish the assembly.

🌟 Final Check

You’re done!
Turn on your Jeep and test low beam, high beam, DRL, and turn signal functions to make sure everything works perfectly.
Now, your Jeep Wrangler JL is rocking a fresh new look and upgraded lighting performance for every adventure.

❓FAQs

Q: Can I install JL headlights myself?
A: Yes! Most Jeep JL LED headlights are plug-and-play. As long as you’re comfortable with basic tools, you can do it at home.

Q: Will it void my warranty?
A: Installing DOT/SAE-approved LED headlights will not void your vehicle’s warranty.

Q: How do I adjust the beam?
A: Use the adjustment screw on the back of the headlight housing to fine-tune your beam height and angle for optimal road coverage.