[rotorwrench]

Ford used similar cut outs for all 3-brush generators since they used them for so long. There are a lot of variations from model T years up through model A and clear up to 1939. The ones for the N series tractors were a little different but mostly how they mounted to the generator. Some were marked for battery and armature terminals and some had no markings at all. They were likely available from Ford dealers well after the war was over. They were set up in a universal way so that they would fit either a model A or a 1939 Ford Standard so they would fit either a terminal type generator or one with protruding wires.

There were two items grounded inside the generators. The field coils had the 3rd brush connection on one end and the ground connection on the other. The brush opposite the armature or power brush was also grounded. The ground wire extended out the case to the cut out mounting base on generators that had protruding wires. Eventually the protruding wires were used for two brush type regulators as Ford started using them.