Switch issues

[justme71457]

I have have recently aquired a used boat that I am fixing up to sale. It has an '85 model 85 hp mercury motor (I believe) that had a dash mounted switch. The previous owner robbed the existing switch for another boat. the wiring is still attached to the motor. I know which wires go to the battery and started lugs on the switch but am uncertain as to which wires are connected to magneto (2 per the switch lettering) and the ignition. The color coding on the wiring cant be trusted due to previous repairs. If anyone has a diagram or can tell me how this switch should be connect I would be ever so thankful. as I stated I am not certain where the magneto wires and the ignition wires are connected on the motor.