I got a bit of moisture in my headlight and before I could have it replaced, the HID bulb stopped working. One day, when I turned the engine on, it just blinked and went out for good. A few days later, the same thing happened to the highbeam bulb. The new headlight is here now, but I'm curious as to what happened to the bulbs? When I put the new HID bulb in, is it going to work? Or was it the fuse and/or the circuit that was damaged and caused them to stop working?

 

Hopefully it did not short out the ballast.

 

a. Check the fuse.
b. If you have a continuity tester, see if the socket is getting power.
c. It may be time for a new ballast.

 

^^^What he said^^^

 

I still have the original Xenon bulbs. Do they last long like the halogen?

 

47,000 miles and my original bulbs are fine. I doubt that the root of this problem is related to the bulbs.

 

Yes.

 

Gonna check fuses right now. Where's the fusebox? Is it the steel box with 4 bolts underneath the steering wheel?

 

The owners manual is your friend.

If you don't have one you can get it here (go to the bottom of the page):

http://www.courtesyparts.com/350z/

 

HIDs use VERY high voltage. About the same voltage that your ignition coil uses, since the HID bulb creates its light by basically creating an arc similar to a welding arc inside the bulb. I wouldn't go poking around the HID bulb socket with a continuity tester unless you want a massive shock.