The positive lead from the Rectifier should connect directly to the Regulator -- not sure which pin, based on your diagram, though. Look at the spec's for the Regulator: it should have one terminal listed as input/unregulated input, and one terminal listed as output/regulated output. Your diagram shows the
un-regulated voltage being connected to the battery -- you are pumping 15-20 Volts to the battery! It is also being applied to the rest of the bike's circuits... You could fry the entire ignition system, you will boil off the battery's electrolyte, as well as damage its internal plates, and you could burn up the bulbs!
What are the Rotor wires leading to? If they go to the Rotor, within the Alternator, I'd like to know if the FSM shows that connection... I have not looked at the FSM schematic, but the Rectifier's output needs to go directly to the Regulator: the un-regulated voltage from the Rectifier needs to be controlled by the Regulator, it will
limit the maximum voltage output to the rest of the bike's electrical system: lights, ignition system, battery, coils, etc., to less than 15 Volts DC (higher, and things start to burn up!).
Remember,
the Rectifier/Regulator is a single unit, from the OEM! Be sure to connect only what appears on the original schematic diagram -- do NOT add any connections that do not exist, or you will have a very unhappy ending... Cheers!
1979 CB750K (sold, 2012, but not forgotten)
1983 Kawasaki 440 LTD Belt Drive (sold, 2011)
1993 Kawasaki Voyager XII