LED Headlight 12 volt non polarity either positive ground or negative ground chassis. The base is BA15S, which has parallel bayonets same height and a single contact in a 15mm base. Long life up to 30,000 hours. Up to 650 Lumen output. CE and Rohs listed. Dim-able using a variable voltage supply. Available in white 6000k and warm white 3000k. Great for vintage and classic vehicles, motorcycles and trucks. Up to a 600 Lumen output. The LED ae optically aligned to the original filament location. The lamp is dimmable using a variable voltage source. Since the lights are dim-able they operate better when there is a low voltage condition. If you are updating your bulbs that are in the turn signal circuit we recommend using 6 ohm load equalizer for each led in the turn signals or a led compatible flasher. The M.O.L. maximum overall length is 1.962" and the M.O.D. maximum overall diameter is 0.741". CE and Rohs. Comparable to a 27 to 35 Watt incandescent bulb. The bulb has a total of 30 5730 smd led's. Each 5730 led can dissipate 1/2 Watt of power. Up to 500mA@12 Volt. Up to 6 Watts.