What is your primary concern now? Why do you think there was something wrong with the field coil?
Something I did when I was working on my charging issues, every connector, I took a piece of sandpaper, and cleaned up every possible connector. ditto on the ground spots.
Stator/Field coil up to first connector, then the jumper portion to the rear of the air filter, Then the connectors to the VR and Rectifier, The relays, I found some dialectic grease for added protection of the brass on brass connections. Since my problem was between the battery and the charging system, got the ignition relay. IE I did not worry about the tail lights/headlights stuff, except for may the ground if there is one there. Then while playing with all those, I did a resistance check to the next connector from there, and double checked for it being grounded out if its not suppose to be grounded. (I had false positives on the turn signal loop)
Good luck