Since of have had the 66, I have encountered many problems with the turn signal switch burning up. I have replaced it six times in just a few years - at $30 a pop, I don't want this to happen anymore. Is there some sort of plastic disk that prevents this, or a stopper that holds the steering wheel away from the switch? Last time, a wire shorted out against the metal backing of the steering wheel through which the horn circuit completes. Please tell me what I am doing wrong. Thanks.