Motorcycle Questions? Ask a Mechanic.
Hi and welcome to JustAnswer,Thank you for the question and your patience. Should you still need assistance for information purposes only...Initially, proposed preliminary tries (if have not been done) is to temporarily disconnect the regulator. With a fully charged battery, the Rhino should start and run without the main fuse blowing.
All other checks would be with the use of a multi-meter.
Please post back results / observations of the above once tried.