HID help- common problem

[endlesswinterco]

one of my headlights is out. i have the cq lighting kit, it has worked great for over a year. went to turn them on, and one is out. just wondering what the common problems are before i go into this. Bulb burn out? Ballast bad? Thanks for any help, or personal knowledge. i still hear the high pitched noise when you first turn on the lights, as if the ballast is getting power.

and yes, ive searched.

[AudiLife]

Well the easiest thing you can do is swap the bulbs. If the problem follows the bulb then you know it's the bulb. If the same side headlight is out then you know its the ballast or it's wiring. Just throwing it out as well have you checked fuses?

[endlesswinterco]

nah, not yet, its my second car, and its raining outside, so its not a prioity. thats why i figured i would ask first, to get some ideas before hand. but those are deff simple enough.