Enhance your safety by adding brake light pulsing to your third brake light. The brake light pulser module connects to your centre high mount brake light (third brake light) and automatically pulses it when you apply your brakes. The light will pulsate on and off for about a second, then stay on steady for as long as you press the brake pedal. Incorporated in the pulser is the "Delay-Repeat" circuit, which requires the brake lights to be off for at least 15 seconds before the cycle can be restarted. So, if you are in bumper-to-bumper traffic, the brake light isn't always pulsing.