OLM now has an F1 style lamp for the 2015+ WRX / STI.
Plug and Play Harness - Included
This item will allow you to wire your new light without tapping the factory wires. This speeds up the install and allows you to return your vehicle to a completely stock setup.
USDM vehicles were not equipped with a rear fog light from the factory. They only have a plastic cap covering up the center of the rear bumper. No lamp, mounting bracket, mounting hardware, or wiring.
This OLM lamp includes the required parts to mount it to your USDM vehicle.
2 Modes easily switched from driver seat. 15 blinks each time the brake pedal is pressed, and then you have your traditional style brake light.
NOTE: To turn off the blinking, step on the brake and then switch the lights (parking) on and off three times.