Acquired a 1225 Husky hydro with TRA 12 D Wisconsin engine. Got no spark. It has things I can't find in manual like a "Syncro voltage regulator 12 volt" sitting atop the engine. It plugs into original looking wire loom from inside front of engine. Apparently it is some kind of ignition module? - neg post on coil has wire grounded to 'Syncro' mounting screw ? Normally that would go to points. Anyone familiar with this set up ? 