BA20D LED headlight 5 to 30 volt, dual filament, no polarity. High beam up to 1800 Lumen. Low beam up to 1200 Lumen. The high beam is up to 1800 Lumens. Incredibly bright. Operates 5 to 30 Volts which means it will work at 6 volts or 30 volts. If you generator puts out higher voltage than 6 volts this light will work up to 30 volts. The bulb will work either AC or DC, meaning non polarized. Works either positive ground or negative ground. There are two contacts on the bottom one for low beam and one for high beam. This bulb is the perfect upgrade for scooters. Available in 6000K to 6500K. Load equalizers may be required, if the bulb will not switch from low beam to high beam or if the bulb flickers when installed. Please install led light load equalizers to fix the problem product code 65832. This product the BA20D base the bayonet is the same facing as the led's. Please see product code 66547 with a base that is rotated 90 degrees from this product. Compatible with: Philips 6728 66 Montesa please install 6 volt voltage regulator and headlight load equalizer