In the last month the headlights on our 04 Marquis have gone out while driving. The dashlights, turnsignals, and emergency lights continue to work. I had the switch replaced....it happened again. While they were out,I turned the switch to other positions with no change. The lights came on again after a minute or so. A few seconds later they went out again but came on again a few seconds later. One mechanic looked into replacing a module($500),but was told by his sources that they had only replaced the modules only on police cars which have a greater lighting load. Any ideas...that problem makes the car worthless and hardly usable. Thanks, Lloyd