The circuit diagram is at http://avstop.com/AC/apgeneral/regulation.html
I cant completely figure out the way current is flowing through the three pole regulator that I have attached. I believe that current is coming up through the L1 coil into the positive terminal of the armature. and, I think current is flowing down through L2 coil and around back up to the positive terminal of the armature. Then I think that current is flowing up from the negative terminal of the armature through either contacts c1 and or c2 or r1 and or r2 through the path on the right of L2 to the positive terminal of the armature. Then , I think current is flowing f from the ground or common symbol up through L5 and splits to go to the L3 coil to the positive terminal of the armature and the other current splits to go up through Lr to the loads and the positive terminal of the battery. I am not sure which terminal the load ground connects to, but I think its the negative terminal of the armature to complete the circuit. I would like to know how much of what I said is right and if you can correct me, where I am wrong?