I am having some problems with my turn signals.I have everything working except for the drivers turn signals.Hazards,brake,reverse and the pass. turn signals all work great.The drivers turn signals come on but wont blink.I have taken them apart and sanded areas for a good connections.I suppose that there is a bad ground somewhere.All the turn and hazards went out momentarily but mysteriously started working again and its a good thing because i almost put a match in the tank and called it good.Any suggestions would be much appreciated.