Somebody should be whipped with a wet noodle for putting a 12 volt alternator on a 6 volt system unless as Jerry said it was modified. That’s why your battery won’t hold a charge it’s been overloaded. Good luck, and replace the alternator with a 6 volt one or complete the entire 12 volt conversion.🛠

Martin
'62 Chevy C-10 Stepside Shortbed (Restomod in progress)
'47 Chevy 3100 5 Window (long term project)
‘65 Chevy Biscayne (Emily)
‘39 Dodge Business Coupe (Clarence)
“I fought the law and the law won" now I are a retired one!
Support those brave men/women who stand the "Thin Blue Line"! Hug a cop!
USAF 1965-1969 Weather Observation Tech (I got paid to look at the clouds)