This problem started slow and got worse, if I continued to bump the ignition switch the starter would engage at some point and would start the engine. Finally the starter would not engage at all no matter how many times I bumped it.

I replaced the starter, solenoid, battery, and starter relay yet still having the same problem.

How do I find the neutral safety switch and test it and how do I test the ignition switch? Any suggestions are very much appreciated…