Got a loaner rotor.
It has continuity where mine does not. Installed it.
Started the bike, no GEN light though the bulb has been checked.
Removed the regulator and jumped the blue/black terminals at the plug.
Voltage at the VM raises as rpms raise. With the regulator plugged it don't.
So toasted rotor, fried regulator.
Rick at ME says the GEN light will most probably work with the fresh reg...