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2018-2022 Honda Accord 10th Gen LED Projector Headlights Installation Guide

2018-2022 Honda Accord 10th Gen LED Projector Headlights Installation Guide

Fits: 2018-2022 Honda Accord 10th generation sedan, LX, EX and Sport trims. Touring models with factory full-LED headlights are not compatible.

Required Tools

  • 10mm socket and ratchet
  • Trim removal tool
  • Phillips screwdriver
  • Wire stripper / crimp tool (RGB and Demon Eye models, for the power and ground lead)

Tools for Honda Accord 10th gen headlight installation

Part 1: Remove the Front Bumper

Step 1: Remove the Radiator Cover

Open the hood. Use a trim removal tool to pop out all the push pins securing the upper radiator cover, then remove the cover to reach the top bumper bolts.

Step 1: pop out the push pinsStep 1: remove the radiator cover

Step 2: Remove the Top Bumper Bolts

Remove the bolts securing the top of the grille and bumper.

Step 2: top bumper bolt locationsStep 2: remove the top bumper bolts

Step 3: Remove the Wheel Well Screws

In each wheel well, remove the screws securing the bumper edge to the fender liner.

Step 3: wheel well screw locationsStep 3: remove the wheel well screws

Step 4: Remove the Bumper

Carefully pull the bumper corners outward to release them from the fender clips. Lift the bumper off and set it on a soft surface to avoid scratches.

Step 4: remove the front bumper

Part 2: Remove and Prepare the Headlights

Step 5: Remove the Factory Headlight

Remove the four 10mm bolts securing the headlight, disconnect the plugs and remove the factory headlight.

Step 5: headlight bolt locationsStep 5: remove the factory headlight

Step 6: Transfer the Lower Bracket

Remove the black mounting bracket from the bottom of the factory headlight and install it on the new headlight with the original screws. The new headlight cannot be mounted without it.

Step 6: remove the lower bracketStep 6: install the bracket on the new headlight

Part 3: Wiring and Installation

Step 7: Connect the Power Lead (RGB and Demon Eye Models)

If your headlights have a separate red and black lead, connect the red wire to a 12V switched (ACC) power source and the black wire to a chassis ground bolt. This lead powers the accent lighting. Standard models skip this step.

Step 7: red and black power leadStep 7: connect to powerStep 7: connect to ground

Step 8: Connect the Factory Plug

Connect the factory plug to the new headlight. If your kit includes an adapter harness, fit it between the factory plug and the headlight.

Step 8: adapter harness

Step 9: Install and Test

Bolt the headlight onto the car. Turn on the ignition and test the low beam, high beam, DRL and turn signal on both sides before reinstalling the bumper.

Step 9: install the headlightStep 9: test all functions

Step 10: Reinstall the Bumper

Once every function works, reinstall the front bumper in reverse order and secure all clips and bolts.

Step 10: refit the bumperStep 10: secure the clipsStep 10: reinstall the boltsStep 10: finished installation

The standard version is now fully installed. The next section applies only to RGB models.

RGB Models: Star Light Running App Setup

Star Light Running app setup, figure 1Star Light Running app setup, figure 2Star Light Running app setup, figure 3

1. Remote control pairing. The remote comes pre-paired with the lamps. If the remote does not work, hold the remote button for 10 seconds to pair it again.

2. Animation control. The app controls the accent light colors and animations. The startup animation is preset and cannot be changed.

3. Download the app. Search for "Star Light Running" in the App Store or Google Play, or scan the QR code on the controller box.

4. Bluetooth connection. Open the app, tap Add Device (Figure 2), open the interface (Figure 3), and select the nearby device.

5. Adjusting modes.

  • Dynamic mode: the number in the center of the blue box shows the current mode. Tap + or - to switch effects, or AUTO to cycle through all of them.
  • Static color: drag the color wheel in the green box, or tap a preset color. This stops any running animation.
  • Brightness: drag the slider in the first row of the red box.
  • Speed: drag the slider in the last row of the red box.

Tip: if you used the older "Light Running" app and have trouble connecting, use "Star Light Running", the upgraded version.

Only one side responds? The left and right lights sync through a signal wire. Check that the sync wire between them is plugged in securely.

Common Issues and Solutions

Headlight does not turn on after installation. Check that the harness connectors are fully seated. Inspect the pins inside each connector; if any are bent, carefully straighten them with a small precision tool and reconnect securely.

Accent lighting does not work. On RGB and Demon Eye models, recheck the red power and black ground connections.

Swap test. If a headlight still does not work, swap the left and right units to find out whether the issue is the light itself or the vehicle wiring.

App cannot connect. Turn on Bluetooth and Location Services on your phone (Android needs Location for Bluetooth scanning). The vehicle's running lights (parking lights) must be on to power the Bluetooth module. Keep other strong signal sources away from the vehicle.

Condensation inside the headlight. Temperature differences can cause light condensation, which is normal. Once the light has been on for a while and the internal temperature stabilizes, the moisture clears on its own. It does not affect brightness, performance, or lifespan.

PrismBeam LED projector headlights on a Honda Accord 10th gen

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