Fits: 2016-2021 Honda Civic 10th generation sedan.
This set replaces both the inner lamps on the trunk lid and the outer lamps on the body.
Step 1: Lift the Trunk Liner
Open the trunk, remove the clips holding the trunk lid liner, and lift the liner away.
Step 2: Remove the Factory Inner Lamp
Remove the three nuts marked by the arrows, disconnect the connector (circled), and remove the factory inner lamp from the trunk lid.
Step 3: Remove the Factory Outer Lamp
Remove the two bolts marked by the arrows. Pull the lamp out along its clips (circled), disconnect the connector, and remove the factory outer lamp.
Step 4: Install the New Inner Lamp
Fit the new inner lamp to the trunk lid, tighten the three nuts, and plug in its connectors. One of them is the link wire to the outer lamp.
Step 5: Route the Link Wire
Run the link wire along the trunk hinge arm, securing it with tape or cable ties, and pass it through the outer lamp's rubber sealing plug.
Step 6: Connect the Outer Lamp
Remove the bulb from the body harness socket, then connect the socket to the matching connector on the new outer lamp. Do not mix up the connectors; see the next two pictures.
Step 7: Check the Polarity
Match positive and negative correctly: the black wire is negative.
Step 8: Reinstall and Repeat
With the bulb socket inserted, reinstall the outer lamp the same way it came out. Repeat on the left side, then refit the trunk liner.
The standard version is now fully installed. The next section applies only to RGB models.
RGB Models: Star Light Running App Setup
1. Remote control pairing. The remote comes pre-paired with the lamps and switches to Red Light Driving Mode (static red, no flowing animation) with one press. If the remote does not work, press the brake pedal and hold the remote button for 10 seconds to pair it again.
2. Animation control. The app controls the running-light 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
Tail light 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.
Swap test. If a tail light 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 tail light. 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.
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