If anyone is considering an HID conversion kit I would highly recommend NOT using the stock wiring harness and instead run a relay directly off the 12v battery even on $250+ expensive kits. Cheap HID kits that are now flooding Ebay and Craigslist are not worth the possibility of frying your wiring harnesses or even catching your car on fire. The best kits I have found are the respected and well known McCulloch HID conversion kits available from web sites like (
http://www.hid-sin.com/). While expensive at $279.99 for the 6000k h4/9003 low beam only kit it is likely to last longer with better results. The stock halogen h4/9003 on the Insight uses two filaments within the same bulb for high and low beams; upgrading to HID with a standard kit will contain 2 HID bulbs and 2 HID ballasts good only for low beam function, and high beam function will be lost. If you wish to have both high and low beam functions, you will need a bi-xenon HID conversion kit ($399.99) with 4 ballasts and bi-xenon bulbs capable of both low and high beams. Some bi-xenon kits us an electric actuator to engage high beam mode by tilting a single HID bulb up or down depending on the reflector housing which requires only one set of ballasts, but may not provide optimal high beam illumination depending on your reflector housing. Other kits use an additional halogen bulb to provide high beam function while retaining HID for low beams only. If I were to purchase a kit today I would opt for the McCulloch 8000k $279.99 as I am willing to sacrifice some lumens for a hint of blue in the light, but most people would probably want the 6000k which is brighter and whiter light. I hardly use my high beams at all, so the extra for a bi-xenon kit would not be worth it to me... I would love to see pictures of an Insight with HID to help convince me to drop some dough on a set for myself as the halogen Sylvania Silverstars I currently have are adequate, just not very cool.
