Chosen Solution
1980 Kz750 ltd H1. Does the stator produce different voltages from each of the 3 yellow wires? Can the wires be plugged together wrong? The secondary plugin (white snap together) is over heating leading me to believe a backfeed is in progress. Wiring diagram is not much help, it shows close wire connecting to close side of rectifier, is this right? How are you supposed to determine which wire is the close side?
@kawrider this sounds more like a bad regulator (failed diode or thyristor) than a stator issue. The voltage supplied by your alternator is continuous and even across so there are no different voltages nor is there any feedback to the stator. It’s all in the regulator. I attached the part about the alternator and regulator from a manual so you can check it out. KZ750-charging.pdf
