How to remove speed control from vintage Kitchenaid 3B mixer

I gave up trying to find replacement parts and removed the mechanical speed control from the back of this mixer, due to the failure of the capacitor and resistor components. I was thinking I could just reattach the power wires to the field and the field to the brushes, but after removing and cleaning up the internals, I am now in a quandary as to which wires attach to each other. Any help, diagrams, suggestions would be arrprciated.