I have a pair of post lights at the sides of my driveway area that burn thru an inordinate number of bulbs for no apparent reason. Sometimes they'll last several weeks or even months, sometimes only a few days. I've tried special bulbs for post lights, and most every standard and extreme duty bulb available .. .. no appreciable difference. They are simply 2 posts fed by a single piece of buried Romex and actuated by a light sensor. Components all seem to be OK and I even replaced both of the fixtures with new ones .. .. no help. Any ideas what else to look for ?? ?? ??
BOB