One of two batteries I load tested at Homecoming flunked the test. In any electrical system, the absolute first thing that needs to be done is to determine that the battery is capable of accepting and holding a charge and performing the proper current delivery when under a starting load. If it can't do both those things, tinkering with the charging system is premature. The battery is the heart of a good charging system, and nothing works right if it's not up to the job at hand.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!