Alternator/wiring issues in LS swap 74

[Malicious]

Originally Posted by hatzie

Around 2002-2005 or so GM started to phase in PCM controlled charging. I'm not sure when the Holden division started to do that.
You could have an AD series alternator that's expecting a charge control signal from the PCM.
If you have it wired up as a self exciting self regulating alternator like the old SI and CS series that may be part of your problem.

Thanks for the idea. Looked into it. Apparently it is not computer controlled.

Any ideas what’s going on?