im interested in doing this aswell ay. from what ive researched the number for eg. 5000k is the temperature the light burns at? which determines the colour? 8000k will be more blue then a 5000k which is whiter.
Cant tell if the ones on egay are any good...probably not... but we can all just pretend
Higher the K the higher the colour temperature. It starts off Yellow and works up to White, Blue, Purple, Violet etc. with variations between the colours. 4000k (white) up to like 10 or 12000k on Ebay.
The higher the K though, the LOWER the lumens (brightness). So the higher in k you go the less bright the light.
Also, there are only 2 german made kits (Phillips and another) and they are the ONLY brands used by ANY OEM car manufacturer.
Ebay brands, well non german brands, have been shown to only last an average of 176 hours for the globe, where as the german brands last around 2500-2700 hours. There is a BIG difference in quality.
ALL cars that have STOCK HID lights run I think 4000K bulbs. Nothing else. I would never go over 6000k.