I'm in the process of restoring this tractor. A previous owner changed it from an internal coil to external. When I got it the stator was shoot. I purchased a new stator/coil assembly and have decided to move the coil back inside the flywheel since the new stator was only available as stator and coil together . I've installed the new coil and can't get a spark at the plug wire. I have it test connected with no kill wire attached, only to the points, new condenser. I have not connected the charging system wires yet which come from the stator. Do I have to have the charging system connected and the battery installed to get any spark?