PLEASE HELP IM IN DIRE STRAIGHTSNo spark MSD but test fine what am i missing!

not just a constant....but minimum of a full 12 volts. The voltage will drop to below 12 volts on the "run" circuit when cranking. That is why you cannot just hook to it. And the cranking circuit is only hot when you are cranking the ignition. That is why they need tied together.