889 12v 27w Xenon Yellow Twin – Heliolite Xenon Yellow are designed to be the ultimate solution to combat loss of visibility during poor weather conditions. These bulbs, with their specialized yellow coating and UV-Quartz glass are specifically designed to cut through the worst fog, rain and white-out conditions that nature can throw at you. The bottom line is that with Heliolite Xenon Pure Yellow lights, you’ll be able to see everything on the road even when you’re out in the elements. When nature is against you, be sure to have Heliolite Pure Yellow.