Here are the pages from MoToR's manual.     These last two are of the wiring in the Studebaker 1939 Manual. They are essentially the same; the President version is slightly clearer.   OK, to operate it. Knob in = "overdrive mode". The overdrive will work. At about 20 mph, lift off the go pedal and it should change into overdrive, a lesser speed into 2nd o.d. Freewheeling should work until locked out by the overd
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