HID xenon conversion kits use noble gas Xenon which generally produces bluish color light. HID xenon conversion kits are made up with a pair of xenon bulbs, two digital ballasts and harness cabling. HID conversion kits include an installation guide; with help of installation guide you can install HID kit by yourself. But it is least preferred that you install it by yourself until and unless you have the technical knowledge about installing headlamps. It is recommended that you consult a technician to make it fixed it will just cost you just few bucks. Retrofitting of HID xenon conversion kits are not allowed in major countries like UK, USA, and Canada and in European countries.