Looking for help with wiring a 1 field regulator to a 2 field alternator

67Dart273 said
The black from ground connects to the brush? That would be fine. What is the brown for?

Sorry, if the picture is confusing. The black wire is not connected to anything yet, but my plan is/was to connect it to the brown wire so they're both connected to the FLD terminal and then to the GRD post.

Dana67Dart said
That is a ground wire that runs back to the VR attaching bolt to the firewall

OPs dad was way ahead of all of us!
View attachment 1716411203

When you bought your new alternator what year did you specify?

Assuming the alternator was the only thing wrong with the charging system with the brown wire and the green wire attached to the ALT it should charge. Adding the dedicated ground on the ALT is not an issue.

if it is still not charging measure the voltage on the green wire to ground while the engine is running 6-8 V would be normal.

We used 1979 to try to get close. The engine stamp says its a 360 LA made between 1975 and 1993, but I can't find a specific date stamp. I have a new regulator available, but am trying to determine if it's needed or if the way the alternator is wired needs to be different than it was. Are you saying the brown wire attached to the second FLD terminal without being jumped to the GRD post should work? I wasn't seeing a voltage increase at the battery with things hooked up that way and thus started exploring...

"Adding the dedicated ground on the ALT is not an issue." Meaning it shouldn't be needed, or go ahead it won't hurt anything? :)

And now I'm questioning if the alternator I have is correct... the engine is newer, but the wiring is still 1968...