"jumping from battery cable direct to the motor connection still gets nothing." Can you be a little more specific on what that means?

Generally, you can short across terminals of the solenoid to bypass ignition switch. Jump across the positive stud on solenoid to the "S" terminal. If that makes solenoid kick in and starter turn, the problem is obviously up stream. Truck in neutral and Ebrake on. Key off. Maybe this is what you meant by the statement above.

The headlight test must also be performed as well as the solenoid jump.

Your problem can be just about anything:
1. Solenoid
2. Ignition switch
3. Wiring/cable connections
4. The starter
5. The battery

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Right is right, even if everyone is against it, and wrong is wrong, even if everyone is for it. - William Penn