Someone gave me a MG FW70 12/24volt trolling motor with a power gator mount. The previous owner had removed most of the wires and here I am. I can find the wiring schematic for the unit but am unsure how some of the switches work. Is there a electrical "flow" chart for the switches to check. I think the speed selector switch is faulty and would like to check it. Any help would be appreciated.

Rollcaster........................................