Being able to identify color codes of two out of the three wires helps. The third bare wire is spliced into the red wire in the harness. Lets try and show the location of the three wires left. The other two wires coming out of the motor are soldered to a terminal on the switch plate.
Now look at figure 13 on page 8-125 in the factory service manual. Look at the harness held to the motor by a clamp. The first wire to the far left goes to a second terminal on the switch plate as seen in figure 13. When this wire was new, it was dark blue. Because of age and heat , it may appear to be greenish blue.
The fabric sheathing on most of the fifty year motors has disintegrated. You might want to dab some red, green and brown paint on the bare wires in case one or more get disconnected. Good Luck.
