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Glad to be of help. What you need to do is trace power from battery to ignition switch to see if the ignition switch is getting power in. You may have blown fuseable link at 10ga wire by starter. the yellow lead on solenoid "I" terminal supplies voltage to coil at start position, then run position from ignition switch supplies power to coil. I will look for a wiring diagram and get back to you.
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Start from the battery and check voltage to the starter, fuse block, fuses & ignition switch. If you have power to ignition switch and no power out to coil replace ignition switch. You may have a bad resistor wire so check to where power is lost.
Here are some wiring diagrams:
On starting with key in start position the voltage flows through the yellow wire from solenoid to coil+. When in run position the voltage comes directly from ignition switch. Power runs through a different circuit. Check your fuseable links. A fuseable link looks just like a regular wire except that it will melt internally and won't be able to see if it's bad with the naked eye. You will have to probe it with test light to fine out where the power is lost.
Replace your ignition switch, that's a given.
Look at this diagram: