Honda TRX420FE ES starts when jumped from external source but dies as soon as either jumper cable is removed. Stopped running abruptly while being ridden.

Have been through nearly, if not completely, every test/check in the SM. Continuities checked, resistance values within standards if range is given except for stator leads. Standard is .1 - 1.0 Ohms @ 68?F my results were 2.2? on all three wires. Current leakage shows 4.57 on 200 microA setting, standard is .1 mA maximum. Current leak disappears if regulator/rectifier battery/ground plug is disconnected. Diodes checked and good. When key is turned on with just the bike's battery result is constant flashing - shift indicator along with N light and corresponding clicking from engine stop/fuel pump relay waterproof. No temp or mil light. Have not found any rubs or cuts in the harness, it's pretty pristine for a 2010. No add on wiring. I am thanking you kindly in advance for any suggestions/feedback!!