The 2022-2025 Subaru WRX 4th Brake Light Kit adds a high-intensity center-mounted brake light to improve rear visibility and safety. This installation guide will provide you with detailed instructions on how to install the 2022-2025 Subaru WRX 4th Brake Light Kit. Continue reading for step-by-step instructions below!
Table of Contents
Installation Tools
- 10mm socket
- 8mm socket
- Phillips screwdriver
- T25 Torx screwdriver
- Plastic trim removal tool
Installation Instructions
Step 1 — Remove taillight trim fastener
Remove the plastic push clip securing the taillight trim using a Phillips screwdriver.

Step 2 — Remove taillight trim panel
Use a plastic trim tool to carefully remove the taillight trim panel.

Step 3 — Remove factory taillight bolts
Remove the two 10mm bolts securing the taillight assembly.

Step 4 — Remove taillight assembly
Carefully pull the taillight away from the vehicle.

Step 5 — Disconnect taillight connector
Disconnect the factory taillight connector and set the taillight aside in a safe location.

Step 6 — Connect inline harness
Connect the supplied inline harness to the vehicle-side taillight connector.

Step 7 — Route harness through body opening
Feed the harness connector down through the factory opening behind the bumper.


Step 8 — Reconnect taillight
Reconnect the taillight to the inline harness.

Step 9 — Reinstall taillight
Reinstall the taillight assembly and secure it with the two factory 10mm bolts.

Step 10 — Reinstall taillight trim
Reinstall the taillight trim panel removed earlier.

Step 11 — Remove center bumper cover
Using a trim tool, remove the rectangular cover from the center of the rear bumper.

Step 12 — Remove lower bumper clips
Remove the two plastic push clips from the underside of the bumper on each side.

Step 13 — Configure brake light strobe (optional)
Leave the purple wire connected to enable brake light strobing. To disable the strobe, disconnect and install the safety strobe module.

Step 14 — Install safety strobe module
Plug the safety strobe module into the harness connector.

Step 15 — Route wiring into bumper cavity
Route the wiring and connector into the center bumper cavity.

Step 16 — Prepare mounting bracket
Slide the provided clip nuts onto the brake light mounting bracket.

Step 17 — Install brake light into bracket
Insert the brake light into the bracket and secure it using the supplied screws.


Step 18 — Connect brake light wiring
Connect the safety strobe module to the brake light.

Step 19 — Install brake light into bumper
Carefully push the brake light assembly into the bumper opening.

Step 20 — Install support bracket
From behind the bumper, position the support bracket against the brake light bezel.

Step 21 — Secure brake light assembly
Secure the brake light and bracket using the supplied bolts and fasteners.


Step 22 — Secure wiring
Zip tie any loose wiring to prevent movement or rattling.

Step 23 — Reinstall lower bumper clips
Reinstall all plastic push clips removed from the underside of the bumper.

The installation is now complete. Enjoy your new 2022-2025 Subaru WRX 4th Brake Light Kit!
Questions About the Installation?
If you have any questions about installing the 2022-2025 Subaru WRX 4th Brake Light Kit, contact us via our support page.
Where Can I Buy the 2022-2025 Subaru WRX 4th Brake Light Kit?
If you're ready to upgrade your 2022-2025 Subaru WRX with the 4th Brake Light Kit, visit DiodeDynamics.com or use our Dealer Locator to find a dealer near you.
Want to know more about Diode Dynamics products? Visit DiodeDynamics.com and subscribe to our newsletter for new product releases and more!
This Installation Guide is for the following SKU: DD8067







Share This Post