SDX HID Xenon Headlight Replacement BulbsHID lights have a glass chamber of gas, replacing the filament of traditional halogen bulbs. The gas is ignited by a 23,000v charge and stays illuminated by a constant 12v source provided by a ballast which is connected directly to your battery.Remarkably, HID lights are able to provide greater light output with much less power consumption. Studies show that a 35w HID lamp produces 3 times as much light than a 55w halogen bulb. Also, a halogen bulb uses a continuous power draw of 10-15 amps, while the HID system uses 20 amps for ignition, but then drops to a mere 3 amps during operation (i.e. up to 80% less power during use!).In addition, the HID headlamp provides longer service life. With no filament to vibrate and fatigue, under normal conditions HID bulbs last roughly 10 times longer than halogen bulbs.What is HID Color Temperature?Color temperature is a characteristic of light that is sometimes mistaken as brightness, when it is more closely related to "cool" and "warm" tones of light. Color temperature is a measure in Degrees Kelvin of the hue of a light source, in this case the HID bulb. (The term color temperature actually refers to the color associated with the amount of heat needed to produce that color from an ideal black body.) It is hard to describe HID colors accurately since many variables such as voltage, type of ballast and the environment can affect color output. Also, color perception is subjective. That said, here is a rough guide to Color Temperatures for HID bulbs:3000K = Yellow4300K = Bright white yellow tinge5000K = Pure white6000K = Bright white (some detect slight blue)8000K = White with blue tinge10000K = Light blue12000K = Blue15000K = Darker Blue (may appear violet)20000K = Blue indigo30000K = Indigo
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