Won't turn over

I had a similar problem with my 1994 a few years ago. I would guess, because you are not seeing any dash lights when you turn the key, that your problem is with something electrical, such as the ignition coil or or wires to the plugs or battery, but you did say that you did replace the wires, pluds, and cap. If you are hearing the engine crank but not fully turn over, then it probaly isn't your starter. If you hear no cranking when you turn the key, just a buzz or grinding sound, then it's the starter. Mine was a failing fuel injector regulator. It was flooding the engine with fuel so It would crank but not turn over. I had to replace the fuel injector spider. The stalling while you are driving sounds like an EGR oxygen sensor valve that is dirty and sticking shut.

Thanks meaty!
I noticed when I attempted to start it again this morning, that the dash lights flicked on and it immediately started up. While letting it idle for about only 15 seconds, the dash lights, which is now just a fasten seat belt light (what I mean is the dash lights you would notice when you turn the key to start the engine) turned off as well as the engine. What does work however, is the radio, headlights, and nighttime dash lights.
I think I am narrowing it down to the ignition switch!
PS>
It does crank over and over.