I have overvolted haogen bulbs they do work well but they eat batteries and you ahve to carry large battery packs around. I was running a 20w halogen overvolted to 16v. worked pretty well. better then my trail tek HID but I don't think ti was any better then my better aimed dinetto otte 600l and it weighed 4 times as much and needed 2 8 cell battery packs.