Cat 236B skid Steer Alternator problems

not charging battery, had alternator tested and tech say alternator is good.. disconnected negative battery terminal engine died to confirm 236B was running only on battery power.. went to check 3 wire connector on back of alternator and 1 is constant hot.. trying to get wiring diagram to see what the other 2 wires are suppose to be doing..



any ideas, or a wiring diagram?

id appreciate it

thanks

Cat 236B skid Steer Alternator problems