This discussion was beaten to death several years ago. Some people are concerned that the increased current capacity of the alternator VS a generator could overload the ammeter, creating a possible fire hazard. The ammeter does have a tendency to go full scale for a short time right after startup. There is a way to install a shunt that bypasses the ammeter and turns it into a charge/no charge indicator. If you'd like to drop me a PM, I can explain the process without opening up another can of worms on the open forum. The primary instigator of that heated controversy hasn't posted here in a few years, but in the interest of maintaining peace and harmony, it might be the better part of valor to take this topic to PM. It's an easy fix, BTW!
Jerry
