Ok....my 68SS has hidden wipers. They would only work, and slow, in low speed. High speed they would park. I have been reading all the forums, and they all talk about making surew the switch is grounded. Low and behold, my switch was not. But before I placed the strap in the right position and grounded it to the dash bewzel screw, and button up th whole dash board, I tried to ground the switch by itself first. To make sure everything would work ok. No difference! I noticed thast when it was in low speed, if I rubbed the ground wire to the strap, it would have little sparks, like I would expect it should when completing the ground. But in high speed ....nothing! Just parks as if I shut them off. Any suggestions? Could it be the switch, or motor? I am bumb founded. Maybe just dumb!