HID lights go by the full name of high-intensity discharge lights. MH grow lights and HPS grow lights are also high-intensity discharge lamps. HID lights produce a great deal of light that more closely resembles sunlight than the light produced by either incandescent or fluorescent light bulbs. So it's widely used in Automobile's headlight, providing a higher and better light intensity with lower power consumption, it's important for road safety.
When we talk about HID lights or HID conversion Kits for your automotive headlight, we should have some basic ideas on the bulb size and color temperature. For bulb size it's the size for the hid bulb with refer to your car model, while for the color temperature, it's the light color (temperature) that you choose for your hid lights, sun white (6000K) is the most popular one, and is legal in most country.
Here is some specifications for color temperature
HID Color temperature refers to the degrees (K) , which simply the measures of the color for the lighting output, like golden yellow, white, crystal white, blue ?
Degree (k) refers only to the color, while lumen refers to the lighting intensity. So the higher the color temperature (degrees K) doesn't mean a higher light intensity (lumen). Here is the summary for the common color temperature on the market --
5000K or 6000K are the most popular color temperature, and if you are planning to buy the hid kits with 10000K or over, please be careful about the legal issue in your country. Most of the 12000K or 14000K (purple) are using off road only.
Please make sure that you know what kits you need to install your hid lights, here are something you should know before purchasing a new hid kits.
1 . Single Beam Kit, comes with 2 pairs of HID bulbs, 2 ballasts.
(if your vehicle uses 2 pairs of bulbs, 1 for low beam and the other for high beam, you can take this single beam hid kit for your low beams.) Common Bulb sizes are H1, H3, H4-1, H7, 9004-1, 9005, 9006, 9007-1?
2. High/Low Beam - Hi/Lo Kit, comes with 2 pairs of HID bulbs (one HID and one halogen on each HID bulb to perform the high and low beam function, Halogen for high beam and HID for low beam.) and 2 ballasts. Common bulb sizes are H4-2, 9004-2, 9007-2.
3. Telescope Kit: Single HID can switch between high beam and low beam, with 2 ballasts and installation clamps. Common bulb sizes are H4-3, 9004-3, 9007-3.
4. Bi-xenon Kit: 2 HID bulbs on each bulb, which works for high and low beam, with 4 ballasts and installation clamps. Common bulb sizes are H4-4, 9004-4, 9007-4.
Most of the HID Conversion Kits on the market are 35W/12V, you need 24V for a truck. Some hid kits are using 55W, so buyer has to read the specifications carefully.
