Theres a tech article on how to test the charge system. You can by-pass all the resistance reading tests and go right to the AC testing (stator). of course you have to have a known good battery to start with. if the AC tests all check out, but you are not getting the approx 14v at the battery at approx 2k rpm
, then the rec/reg is bad. Stator produces the AC voltage that goes to rectifier,converts it to a DC voltage, then the regulator drops the voltage to a working voltage to charge the battery.