What do they look like, color wise and where can I buy them. I am in north carolina so not but soo muny places i can go.
HID is High Intensity Discharge, Xenon is the gas used in HID bulbs.
The color is actually done by "Temperature" The temperature is in Kelvins. Different manufacturers [...]

Yes the H4/9003 bulb is the same plug. They both have the 3 prong setup.

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for example can i install 6000K Hid headlight bulbs in the stock headlight housing of my 2000 nissan maxima? do i need the hid conversion kit?
No. True High-Intensity Discharge (HID) lamps require different sockets and different wiring, including a transformer for installation. They do not just drop in, and aftermarket kits are probably [...]

I leave the headlights alone and let Jesus light my way

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i saw them on ebay……
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=370183916911&viewitem=&sspagename=STRK%3AMEWAX%3AIT
i have a 95 nissan 200sx
Those aren’t HID Those are Halogen imitate to put out light like HID. but they aren’t bright at all. You can use those without HID kit. The before and after pictures are fake to me. Buy the real HID kit (with ballasts that ignites the bulb) [...]

If you are looking at the driver headlight head on, there are three bulbs. The first two are in a single enclosure which are HIDs, but immediately right of this enclosure is one single light. I don’t know what this light is called but it gives off a yellowish halogen light and I would like [...]

Or do I need to purchase an aftermarket headlight housing?
You can install an HID kit in your stock headlights with no problems except blinding other drivers. I highly recommend either buying projector headlights for your car or, if there are none mass produced, doing a projector retrofit into your current housings.

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can i just put a different (one that is waaaay cheaper) HID headlight bulb??
or
if you know of any cheaper places to buy Sylvania Osram D1R Xenon White 4300K Factory HID replacement bulb. that is less than $120??!
You do have to replace them with a HID, (you can’t replace them with a Halogen bulb – [...]

the headlight to my 2003 Infiniti G35 went out, its the HID Xenon bulb, and the dealership says a replacement is 250$.
Anyone know of a cheaper bulb that I could get?
Go to http://cpwstore.carpartswholesale.com/catalog/?PN=9219&N=0&VN=4294967180+4294967089+4294965029+4294967247+4294967010&Nr=AND(universal:0)&sv=0 and take your pick

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no it doesnt. the xenon bulbs have a small blue effect but they do not light up anywhere close to an hid light will also the hid kits are made to burn hotter but to give you a certain scatter of light so that it wont be to blinding for drivers coming at you you [...]