Hello all. Thought I would pass this info along to my fellow Mango and Maramu owners. (Not sure about the sharki or others)...Had my propshaft alternator rebuilt and a new regulator installed. The alternator is a motorola 9MR-2-814-0 20 amp 12 volt unit. The voltage regulator is not the original but we were able to get a motorola M5-763 regulator to work. Pictures are below.