Rebaydo 2pcs LED Headlight 6 Volt BA15S Base Single Filament bulbs work with either 6 Volt positive ground or 6 Volt negative ground vehicles and provide up to 950 lumens of output. Single filament means single brightness. The BA15S base is 15mm in diameter with parallel bayonets and one contact on the bottom. The bulb contains 16 forward firing 5730 SMD LEDs and 44 side firing SMD LEDs, with the LEDs optically aligned for optimum light output using your lens and light fixture. It provides up to 340 forward firing lumens and 560 side firing lumens, or 60 MSCP to 70 CP candle power. The bulb has a long life of up to 30,000 hours and is dimmable, allowing the light to slowly dim as voltage decreases. Available in White 6000K and Warm White 3000K. Maximum overall length is 1.944 inches and maximum diameter is 1.058". The maximum voltage is 8 volts. White 6000K uses about 518mA at 6.09 volts with an approximate dimmable range from 3.61 volts to 6 volts. Warm White 3000K uses about 547mA at 6.09 volts with an approximate dimmable range from 3.61 volts to 6 volts. Uses about 1A at 6.3 Volts. These bulbs do not have built-in load equalizers and may require load equalizers to be installed to operate correctly. The bulbs are solid state for low power and super long life. SMD means surface mount device and is the square LED. Every bulb is tested before shipping. Includes 2 bulbs per package. Available in White 6000K and Warm White 3000K. If the color is not shown in the drop down, that color is out of stock and takes about 4 to 8 weeks to restock that color. May also work for a compatible 1651 bulb; please check the size of your lantern to ensure this bulb will fit. Compatible with John Deer Studebaker 1918.