Note that any of the flashers will only produce the desired results when hooked up to LED brake lights.
If you attempt to flash the regular, incandescent brake light bulbs, the filaments react too slowly to the switched power and you just get a dimmer brake light (definitely not desirable).
If you attempt to flash the regular, incandescent brake light bulbs, the filaments react too slowly to the switched power and you just get a dimmer brake light (definitely not desirable).