More information about xenon lights
Xenon lights produce daylight quality light that is far superior to conventional headlights. A single xenon light can produce three to four times the lighting power of a halogen light while only consuming one-third of the power draw.
Xenon lights (often called HID or high intensity discharge) don't use a filament. Instead, xenon gas is ignited by the firing of an intense electrical current (around 18,000 to 25,000 volts). The high intensity of the arc comes from metallic salts that are vaporized within the arc. If the xenon gas wasn’t present the headlights would have a significantly longer warm-up time.
Once the bulb is up to full brightness (approximately one second) the ballast provides a steady 90 volts to maintain the arc.
HID lights are whiter than conventional car headlights. In fact, they provide a light that is relatively close to natural daylight; far closer than any other lighting system.
The colour of a light source is expressed as its colour temperature. As colour temperature increases the colour of the light moves from yellow to white to a bluish white. That’s why xenon lights have a white or even blue appearance.
Another big advantage of xenon light kits is that once started they only draw around three amps, which is similar to a 35-Watt globe.