MF65 Key Switch

[Rogerkmf50]

My MF 65 diesel stopped starting with the key. It starts with a screw driver at the solenoid / starter. The key switch is not working because a wire came loose and when I took the switch out to repair it, another wire came loose. Can someone provide me with a wire diagram of the key switch? The switch has no Batt, Acc or Ing markings.
Thanks, Roger
Oxford, Ohio

 

[Jim.ME]

Can you identify where the wires go, so you will know which wire to connect where once the switch terminals are identified? Can you identify where the one wire still hooked to the switch goes? With no markings on the switch, you are going to have to ID which terminal is which. Do you have a volt-ohm-meter?

 

[Dieseltech]

My MF 65 diesel stopped starting with the key. It starts with a screw driver at the solenoid / starter. The key switch is not working because a wire came loose and when I took the switch out to repair it, another wire came loose. Can someone provide me with a wire diagram of the key switch? The switch has no Batt, Acc or Ing markings.
Thanks, Roger
Oxford, Ohio

The 65 diesel uses an Off/ Start/ Heat/ Heat start switch to operate the intake cold start heater. It's not a common switch the auto parts store would have.

 

[Eric in IL]

This diagram is for the A4-203 engine. The AD4-203 might be the same.

 

[Rogerkmf50]

Thank you everyone.
To be safe I might purchase a new switch with the correct/right markings.
Roger