95 Pathfinder LE Headlight Issue

The drivers side headlight on my Pathfinder doesn't always work. Sometimes it will come on and work fine and then for some reason it goes out. I've replaced the headlight switch, but it is still does it. Anyone have any ideas on where I should start my search?

are the left and right head lights on different ckts.? youu can tell if therre are separate fuses for each. i would go to the head light with a test light and see if you are loosing power or ground.