I'm having alternator issues and electrical is my worst DYI subject. A little over 2 years ago, my alternator stopped working and I had it replaced. Stock alternator for Mercruiser 350 Mag MPI. Just this last week, the same issues are coming up again and the alternator is dying/died. Volt meter goes slowly from 13 down to 10, then 9, then 8 volts and things on the boat stop working simultaneously, then at all. This happens over a day or two (not all at once). Boat will run but when you turn on a ballast or bilge pump, the Perfect Pass will turn off (not enough juice to run everything). Obviously, I need a new one.
But why such a short life? Will a heavier duty alternator fix this issue? There's nothing that unusual on my boat as far as electrical accessories: 2 amplifier stereo, Perfect Pass, basic bilge & ballast pumps. That's it. Could it just be that I need a beefier alternator or should I be checking out other potential issues?
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