no one calls moving the ground from the frame to the rectifier floating.
ma is retarded you can not float a stator. it is idiotic.
this is called running full wave. in this case you double the stator output by moving the ground off the frame.
trouble is this requires removing the flywheel and running a wire. that's asking a lot from someone who is not able to test the thing.
even if you run full wave that tap to the taillight is n/c
use that link you posted. that guy has some advanced schooling like me. we talk the same language. (edited)