Hopefully appropriately for an Australian forum, a country where they love the rotary engine, we have here a voltage regulator off a Mazda RX-7 FD model. I am familiar with off car testing Bosch regulators, but am a bit stuck with this one! I think Mitsubishi build the alternators and I attach a photo, hopefully below, cribbed from a well known auction site advert! I have a variable voltage, variable current bench supply and a 5W 12V bulb as a load. How do I feed the variable volts *IN* to the regulator to find its cut off voltage, assuming it's working? I suspect it is, the rectifier block is both physically and electrically faulty. But I want to check before buying a rectifier. Thanks.