My buddy just bought an all-original Apparently!) '63 C10 with inline 6 and 3-speed trans. There are 2 switches we do not know and we would like to gather some info about them before we touch them/use them, just in case...
First, there is a push-pull black knob under the dashboard, right of the steering column; this actuates a cable that goes into the trans. Previous owner said it is a free-wheel system in the trans, but did not know anything more. Can this be true? Why a free-wheel? How does it work?
Second, there is a switch that looks a lot like an interior light door-jamb switch mounted on the engine side of the firewall, it seems it would be triggered by the throttle linkage at or close to WOT. The wiring goes to an electric motor on the side of the trans: looks like an electric overdrive, doesn't it? The trans is also longer (between the main case and the tailshaft housing) than another 3-speed my buddy has. Is it an overdrive indeed? How does it work? When should it come on?
Any connection between the free-wheel and the OD?
Thanks!
