67Dart273 said

I think you are gonna find that the ignition wire IS NOT hot in start but only in run. How is this dealt with?

In older cars there is IGN1 and IGN2 right in the ignition switch. IGN1 is "run" and IGN2 is the brown bypass provides power direct to the coil + when cranking

On your pickup you may or may not have "IGN2" I believe this function in later years was handled by a separate additional contact on the starter relay. Older vehicles had 4 connections on the starter relay........the "big stud" is battery, the 'square" screw is starter solenoid and two "push on" flag terminals, one goes to key 'start' wire, the other to ground through the neutral switch

On later starter relays there is AN ADDED 5th contact which replaces the purpose of IGN2

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