Hi Ron, I see that the classic chevy parts replacement wiring harness that Tim provided the link above for specifies either generator or alternator systems. I know it is not safe to assume anything but isn't the generator version going to be 6V and hopefully they are using the wire gauge specified for 6V? I will be trying to get a hold of someone there to verify but I have this feeling I won't really get a good answer..

Thanks!
josé