I have a 2007 Civic Si that I am having some headlight issue with. I started having an intermitting probelm with the passenger side head light not coming on all the time. About 3 days ago I can not get the head lights to come on at all. I checked the fuse, it was all right. Any suggestions?

 

check for loose wires.

 

Yeah, sometimes where the pins go into the plug housing gets funky. Maybe try de-pinning and swapping the plug end with a new/another and see if you can locate the connection issue.
Do you have an HID kit or anything aftermarket like bulbs? Sometimes people put the wrong voltage bulb and that sometimes creates some heat issues with the draw.

 

Is the headlight plugged in? Sounds like maybe the plug wasn't clicked in when changing a bulb and it worked itself out.

 

Check the actual bulbs and make sure they're not burned out. Sometimes when the filament is close to breaking it will have intermittant continuity. You need to look at everything at the headlight anyways, a quick check of the bulbs is easy and rules out one more possibility.