still chasing this issue.... the battery tested 12.2 with the car off and nothing on.... my truck was 12.7.. vette was 12.5 with a brand new battery in it..... I think I need to go thru the rest of the wiring on this.... there are no other wires coming into the system.... only the positive cable is connected to the starter.. only the positive battery cable is running in and out of the solenoid...along with 1 wire to the ignition on the small terminal.. shouldn't the alt. wire be connected to the battery or the solenoid?????