Short version is that HID in the stock monster bucket can be tricky. If you to an advanced search for HID in tech and mods you'll see sevral discussions and details.
One link that's in that mess is this:
http://www.danielsternlighting.com/tech/bulbs/blue/good/good.htmlIt's a very informative site and might provide an alternative to HID. I'm looking at swapping to the +50 bulbs discussed. At 1/5 the cost of any reputable HID kit I've seen... seems worth it since it's just dropping in a bulb.