Hello, I am John, a Ford dealer technician.
I hope I can help solve your problem quickly and accruately.
Would you like instructions on how to replace the switch or the key cylinder?
If the key is spinning around then you need the key cylinder instructions. The ignition switch is an electrical part that wouldn't cause your symptoms. You probably have a broken end on your key cylinder.
Click here for ignition switch instructions.
I hope this answer has been helpful to you! If you have any further questions please feel free to ask.
no this is straight out of the 95 shop manual, here is a procedure out of a 98 manual, same column, same parts. Just a different truck ;)
Click here for instructions