The cart will not move. Batteries are good.I have checked all the wiring connections. There is a clicking noise at the solenoid and controller. The solenoid gets hot. When I first got the cart it would speed up and slow down on its own.Then it seemed to work ok until now. It has a run/tow switch on the controller cover and the forward and reverse switch by my leg. I think it is a PDS cart. Don't know what to do next. Any help would be great.