OK, so no I have checked everything yet, but; just replaced headlights over the weekend, they have worked fine all week until tonight. Brand new bulbs (nothing cheap, Silverstars) driver side out already. Now, in my mind I'm running through the scenarios. 1) bad luck, happened to get a bad bulb in 2 pack; 2) Since driver side was the bulb that was out when I replaced both, there is something wrong on that side, but any suggestions to what? Rattled it, bumped, tried to see if I would get a flicker (maybe loose connection, bad wire, etc.) but nothing. As I said, haven't been able to check everything yet as it is dark and I have no garage, but if anyone out there has had this same issue, I would be interested in hearing about it.