Sounds like another bad alternator. Remove the alternator and take it to an auto electric shop along with the first one (if you still have it). Maybe one good one can be made from the parts of both - or - they can bench test it and replace the needed parts with new ones.

Frank

'89 [color:"white"]G-Raider[color:"white"] [color:"black"]Supercharged 3.0L, MegaSquirt 2, lockup A/T, 2.5" exhaust, 172k, Cibie H4s/Oscar SCs, Hella Micro DE fogs, Cobra CB, Superwinch hubs, LSD rear/Aussie Locker front, Bilsteins, Lifeline AGM, Rust-Oleum