There seems to be no rhyme or reason why my turn signals are acting the way they do. One day they work, one day they don't. My hazards (four ways) always work, so I know the bulbs aren't burnt out. All these probs were preceeded by a strange buzzing near the steering column...I replaced the flasher but that didn't seem to make a difference. Do I have a short somewhere? I'm helpless with this electrical stuff...pls help!