Put a new Solenoid in Sept. All was well. Today, I took the charger out and it does nada. Checked the battery voltage and I have about 7.7 volts one each battery 48 volt cart. Before I left, I charged the cart and put the switch in Tow. Now is moves not. Darn I hate to put a new solenoid in again, they are not cheap. Any Ideas? Step on the pedal and I hear nothing. Goes not.