Hi,

I have a 1982 OMC I/O (3.9 L V-6). I've noticed the battery voltage
gauge reads about 18 volts (in the red) sometimes. I'm not sure if this
is normal or if there's a problem with the internal voltage regulator
in the alternator. Some charging systems go "open circuit" once the
battery is charged and read high voltage. Is this the case with
my situation or is there something wrong with the regulator?

b.