The Alternator should make maximum output when New/In Good Condition, if it has a fault such as a short across some windings then its output would be lower, so I can't see how it could put out more and hence damage the Rectifier/Regulator. Have you checked the condition of the Charging fuse (the 40A large one)and its connections to make sure the voltage output from the regulator is getting to the battery Checkout the Desmo Due Paddock on Facebook |