No spark when cranking

If I understand what 67Dart273 is saying is that:
In Start position the ignition switch no longer provides 12 volts to the blue wire.
In Start position the ignition switch provides 12 volts to the ballast resistor (brown wire).
I have read it both ways on different forums. IGN1 should always have 12volts in START or IGN1 should be DEAD in Start.

This means that the brown wire would be supplying voltage to the Blue wire circuit through the ballast resistor.

Since the only way this car will start is when you go from Start to Run, I have gone through 2 starters and 1 battery. I have also replaced the ignition switch which is a real pain.

Either way there is still a minimum voltage level that is required for the ECU to work correctly.

What is the minimum voltage level for the ECU?

From: http://chargerr.com/Ignition/Ignition.htm