75 Duster Neutral Safety Switch... I need to replace it!

You sure it's not your starter? What happens if when you turn the ignition? If if goes click each time, or even nothing, what happens? If you resist the urge to touch and move the shift linkage or mess with the lights, and just keep turning the ignition on and off and on and off - does it turnover eventually? If so, it's probably a bad comm on the starter. If not ... then it's probably your linkage as mentioned.

There is no clicking (then I would know its the starter, I wish it was that simple!!! haha)... I have replaced the starter cylinoid thinking that was the problem and now the NSS.

Its just silent... oil light comes on like it wants to start and I noticed this morning when I turn the key and watched the gauge marked "Alternator" the volts dropped way down, when I turned the lights on and off it went to the center point and started. Could this be an alternator or Voltage Reg problem?

What is "linkage" and how do I inspect that or test that? Is it hard to replace and how much am I looking at to spend "IF" that is the problem?

I am learning as I go fellas so thanks for all the help!