Column drop switch what does it control?

[corvette8n]

On my '41 coupe my column drop switch has some extra wires on it and also some wires that are cut off, I know one of the wires goes to an electric fuel pump with a momentary contact switch in between. I know the ignition circuit is controlled by the drop switch. My concern it that the unknown extras may draw too much current. Car is 6 volt pos ground. Anyone have a wiring diagram or is one listed in a book I should have.