Includes a hassle-free plug-and-play harness for quick installation without modifying factory wiring. This RSI V3 F1 Style light transforms your 2015-2021 WRX/STI’s plain rear bumper cap into a striking brake light with dual functionality. Switch between an attention-grabbing 15-blink mode when braking or traditional steady illumination with simple driver controls. Complete with all mounting hardware and brackets needed for USDM vehicles, this smoked lens with red bar design adds both safety and style to your Subaru.