Brightness is the biggest advantage of an HID kit. Not only will you be able to see farther and better at night, but other drivers will be able to see as well. Its estimated that an HID conversion kit will increase your headlights brightness from a halogen set up as much as 300%. That is an enormous upgrade and will be extremely beneficial to anyone driving at night. Electrical consumption might seem misleading as an HID Conversion Kit is actually brighter than halogen bulbs, but HID actually consumes less electricity. In each HID conversion kit you are given ballasts. These ballasts actually convert your standard 55w electricity that powers your halogen bulbs and reduces it to 12V 35W. This puts less strain on your electrical systems.