Just went through this. Do what Tom P told me...........October 4 2017 at 2:10 PM
Mike U. (Login mtrain)
Response to Starter frustration
Tom told me to run a separate push button start switch.
Just to make this more simple. I still use my key to turn the ignition ON.
Then I push the button to start the engine, and let off the button once the engine is started. The key stays on until I want to turn the engine off.
Wire one prong of the push button to the energized part of the solenoid, then the other prong directly to POS side of battery.
This way the starter isn't still energized by a possible bad key switch. In my case a new key switch was over $200.