My brake Lights aren't working except the upper ones (3rd brke lights). I've changed the brake lightbulbs over and over and they don't seem to be the problem. The wires and the sockets all seem in good condition too. Someone told me that it's indicative of a turn signal switch going bad; even when the turn signals function right, because the brake lights are also routed thru the turn signal switch along with the brake switch....seems weird to me but ANYONE know for sure that the turn signal switch could possibly be at fault???