Well the maggots just don't loose their charge, so if they are still in place in the flywheel, they are ok.
Again, not familiar with your model but the 12V AC wire is usually the power for lights because lights work AC or DC.
look closely at the stator wiring, I have been known to get lucky and find a broken wire in plain site. and repair it, but other times its buried under the windings.
You still haven't said why you replaced the first stator?