One New Aftermarket This flashing unit is for cases where typical flasher bulbs will not work for LED warning lights due to the lack of power draw resistance needed to make them functionFor LED warning lights 28A43, 28A44, 28A45, WL3630, WL6025 WLHV44 1 LED90 is needed per light90 flashes per minuteThis is to be mounted in series, red wire to power source, gray wire to power wire on lightVoltAmperage12 Volt 005A 10A