I installed Sylvania Xenarc HID lights on my car & they work very well. They are installed as driving lights, but called "auxillary low-beams" (X1010) Give the same white/blue light as factory Xenons, but not as much--I guess about 70% of what I got from the factory Xenons on my '99 A6. Can be seen at: http://www.sylvania.com/xenarc/prodinfo.htm Tom Daily