Led Bulb BAY15D 12V LED Bulb. BAY15D base. Up to 950 Lumen output. Long life up to 30,000 hours. CE and Rohs listed. The bulb is non polarity so you can use it either positive or negative ground vehicles, trucks and motorcycles. The leds are aligned so that the light output to the reflector is the most efficient. This bulb fits the outline of a standard light bulb so you should not have installation issues. Comparable to a 27 to 37 Watt halogen bulb. This bulb works great for sockets that are wired backwards. Available in warm white 3000k, white 6000k, red, green, yellow and blue. These lights led are super bright.