Truck has good battery but can't get it to turn over?

[BlacklandCamper]

I would start with the wiring from the battery to the ignition switch, then move from the switch to the connections behind the dash. Some of the connections at the light switch ground through the dash, and you never know...

Here is something no one else has asked...

Do your wipers, and horn work? Both of them only work when the ignition is on "Acc", or "Run". If they both work, your ignition switch is indeed passing power. Check the connections and wires from the switch to the solenoid, and the chassis grounds along the way. The main circuit you are concerned with is Battery - Switch - Starter - Ground.

Good luck! It sucks, but if you have been dealing with electric gremlins already, this is something that needs to be done. Besides, consider this a good time to reinstall your radio, and hook it to switched power like it should be.