H4 LED Headlight 9 to 40 Volt No Polarity direct fit. Works either positive ground or negative ground. Up to 22 watts for the low beam for each bulb. Up to 22 watts for the high beam for each bulb. Uses 1.762 Amps for the low beam for each bulb. Uses 1.798 Amps for the high beam for each bulb. Up to 2,050 Lumens for the low beam for each bulb. Up to 2,050 Lumens for the high beam for each bulb. Since the bulb is direct fit just remove your old incandescent bulb and install the led bulb. Comparable to a 50-55 Watt incandescent bulb. The bulb is not dimmable due to the wide voltage. This bulb is designed to be used for headlights. This bulb does not have built in load resistors and may require load resistors to be connected in parallel with the low beam of both bulbs. If that does not work connecting load equalizers in parallel with the low beam, please add load equalizers in parallel with the high beam. If the bulb flickers or you cannot change from low beam to high beam are symptoms requiring load resistors. Has a low beam cup to keep the light from blinding on coming vehicles. The light color is 6000K. The headlight bulb fits a standard H4 female socket. Every bulb is tested before shipping. Includes 2 bulbs per package. 1 year warranty from date of purchase. DOT, CE and Rohs.