Converts single-intensity LEDs to dual intensity with the advantage of 100% ON running lights and a full-contrast turn signal flash. Works with any size LED up to 300mA per side. Increases front visibility by changing the running light from 30% brightness to 100% brightness and flashing the LEDs from 0% to 100% to give more contrast to the turn signal. Eclipze2 LEDs work with emergency hazard flashers and all alarm systems when the vehicle is off or on.