Originally Posted by pizzaguy

Im in Chicago visiting my grand daughter. can't spend much time on here, but checking all those grounds is a waste of time.

The paths you are worried about are:
From the battery positive terminal to the starter.
From the battery ground terminal to the chassis.
The jumper from the block to chassis (behind power steering pump).

That is the high current path you are now concerned with. At least you are close to the problem.

Look in the service manual, Chapter 8 (wiring). Look at both starting and charging systems and you will see how it's wired.
I"m starting to think the starter or solenoid is at fault, rare as that it.

Now, one more thing. Do this:

1) Turn on headlights.
2) Press the relay.
If you get a click AND the lights dim way down, look for corrosion or other high-resistance issues in the ground or positive cables.
If the lights do not dim down, I'd look back at the starter/solenoid.