well, i got done reading over Xenon's FAQ sheet. It says the HID bulbs are supposed to outlast the life of your vehicle, with bulb life being over 2500 hours.

i really, really hope it's the bulb or the wiring though. i talked to passwordjdm today, and they told me that there's no exchange service, or warranty on a defective HID unit, because it's used. so, i'll be stuck with a defective HID that I paid $900 more for, than a non-HID unit. that would friggin' suck. what's worse, i won't really have the money to afford any new head lights for a while, so i'm stuck driving a car around that has no driver side head light...

=(