I have the opposite problem of most here....the thing is overcharging 15.9-16.1 volts. Is that normal for these cars, I'm used to seeing about 13.5-14.3 volts.
I just replaced the battery, doing some maintenance for a neighbor,and discovered this after the install of the battery. If it's not normal, is there a separate voltage regulator, or is it internal to the alternator, and where abouts would I find the regulator.
Any help is appreciated.