That looks like a pretty standard Delco-Remy generator. There is a voltage regulator somewhere, at the end of the two wires attached to the terminals.

What can be seen of the insides looks pretty good, the brushes are not worn and the commutator looks good.

The wiring looks poor, I would start there. Take that blob of tape or whatever off the brown wire and see what is underneath. Repair the repair so it has good current capacity and clean up both of the connections at the terminals. It just might work then.

There may be an oval shaped data plate with the name "Delco-Remy" on it as well as numbers. From the rusted look of the area, the plate may be gone. It was held in place with a small rivet at each end of the oval.

Last edited by sweepleader; 06/28/2020 1:29 AM.
Mac :{)

1962 K10 short step side, much modified for rally
1969 T50 fire truck, almost nos, needs a few things