Ok I fixed it finally. Not quitting my day job...
Not really fixed just hot wired the solenoid and drive it. Ran like a beast, gauges all good.
12v on dash with new battery.
Drove a few miles, engine cut out.
All fuses except 5a crank have power. Crank had none when key pushed fwd for "ignition." All fuses test 0 ohms, closed circuit. Tried new fuses for battery and ignition anyways, no dice.
Old ignition switch replaced because why not. Both red wires 255 and 256 were hot. Yellow hot when key pushed to ignition yet no click, no crank.
No power to clutch safety switch
All fusible links at junction box showed 12v hot at end term to box, and hot below that on actual link, and hot below that on wire that precedes link.
Can't remember if hangy-downy, no-home yellow&purple free wire in the cab near fuse box was hot or not with ignition, I want to say not hot. It is too short to reach fuse box and the harness does not match the only open terminal it might fit.
Still no click, no start. Solenoid does show 12v with light tester when key push fwd for ignition.
New starter. New battery. New clutch switch. New ignition switch.
Rod from Ignition cylinder is hooked up and functioning. (Manually trying to start truck bypassing ignition cylinder didn't work either.)
Additional back story and sequence of events: first time this wouldn't start (no click) I then finagled the tilt steering wheel I think, pushed the clutch in and then she ran. (Had it in neutral before I finagled the wheel and it didn't click.) I had just gotten done flushing coolant, installed new thermostat, cleaned ground contacts and stud that sits by thermostat. Few days later, drove truck 25 miles no problem. Next day drove 2 miles, came home to park while running, pushed park brake and that broke so I shut her off, mins later started her up to move it and shut her down. Made a trip to inspect park brake cable and front brake lever in cab. Few days later no click, no start.
PLAN:
1. Back track yellow from ignition switch to understand where that comes from.
2. Find what is connected to "crank" fuse slot.
3. Pop distributor cap look for corrosion because I should regardless on this old pig.
4. Understand how distributor Is wired hot and if that cut out and shut me down when driving. (Never happened before.)
5. Whatever I forgot or get told to do.