If you haven't gotten it fixed yet, here's a good test. The two smaller wires that are in the plug on the alternator, one will have 12 volts all the time, the other will have 12 volts when switch is on, no/low voltage on either could be a problem.
Check the plugs under the floor plates for corrosion.and sometimes they can chaff under the removable yellow cross member
Not sure about the age of your machine but I believe this one has a 50 or 60A. blade style fuse in the charge circuit. follow the (largest wire) +12 from the alternator and you should see it.
May be under a clear plastic cover.
hello buckshot !
Please post your email on your profile
I can send you to diagram