I'll disagree a little bit with some of the people on here. I lose my headlights and my turn signals about once very month to six weeks. It's always the fuses. I have cleaned the connectors and bought different fuses and it doesn't seem to matter. Every time I reach down and touch the fuse corresponding to the light that is out, Voila, it works again.
Just one of the many quirks of owning an old car.