08 Driver's Side Headlight problem?
 

I noticed today after coming back from the store that my high/low on my driver's side headlight wont come on..... It has been raining off and on here in Las Vegas for the past few days but no condensation inside the headlights or anything like that. I turned on my headlights in the garage when I got home and noticed now it would flicker for a few seconds and go off, turned them back on and would do the same thing......eventually I got it to stay on kinda dimish, so I tapped the light a few times and then it went out completely. Any ideas before I go ripping the headlight and checking connections and what not?

Thanks in advance!

??????

Ballast ?