[strictlypersonl]

The ground wire on the alternator is really not a factor. It's put there just in case the alternator loses its ground to the engine - not very likely. Since your battery doesn't seem to be charging, the problem is likely to be either a bad connection at the battery or the battery ground, or a bad battery. If you have a cutoff switch behind the seats, check the connections there too.

Where are you connecting your jumper box (when the engine cranks well)?