Ok all you electrical pros out there please help. I have a 72 Scout with a 345 which ran real well until just recently, here's what happened. I noticed that the alternator guage was leaning a hair toward dsicharge, so to check and see what was going on I started the Scout and disconnected the positive battery cable and it died so I took it to work and they replaced it ( I work in an auto parts store-thank god) I took the new alternator(actually rebuilt) and installed it and did the same thing it stopped running as soon as I disconnected the positive battery cable so again I took it back and I got another alternator and we tested this one before I took it home and it tested as being good. I install it and do the same test and lo and behold the engine is running when I take the battery cable off and I figure I am out of the woods. Also I noticed that when I started the put the cable back on the alternator guage went shooting up to charge and then almost as quickly went back to being just a hair towards leaning to discharge again. So including the original alternator I brought in I am on my third alternator and the case with all of them is that the diodes are fried. Anyone have any idea what is causing this? All assistance greatly appreciated
Aloha
Charlie McKenna
Waipahu HI
Akahai - kindness
Lokahi - unity
Olu'olu - honesty
Ha'aha'a - humility
Ahonui - patient perseverance