ok:
unplug the fixture, take off the bulb with cloth not your hands. put back in the correct way. cover it up. plug it back in. wait a few mins so that the ballast cools. then switch it up!
Originally Posted by Cranberry http:///forum/post/3210510
Nissan is correct, if they are not seated right, they flicker.
Yeah...make sure both sides have "snapped" into their places