efb3
New Member
Due to sub 12 volt readings on my voltmeters checked battery voltage with engine running. Only 12 volts. Getting only 11 volts at alternator output. Removed alternator and shop verified alternator bad. Bought two new alternators since voltage readings on port also low and now have no output from either new alternator. Boat is a 1986 340 Sedan Bridge with crossover charging system. Could the battery isolator be affecting the alternator? Need help.