Re: Ignition switch swap out

[Don]

So there are only three wires on the current key switch, correct? Sounds like someone just substituted a key switch for the original start button…
If the wiring is original, then one wire will be battery positive to power up the switch. One of the other wires will run over to the choke button/switch. The other wire runs back to the solenoid to power it up when the key switch is turned to "start".
Do the wire colors conform to the colors shown in Frank’s 1957 diagram (two green and one red wire)?
If so, I would just purchase a three pole key switch. The two green wires go to the "bat" terminal. The one red lead goes to the "start/solenoid" terminal…
Post some pictures if you can…