Smoked some wires today

20 Ohms was from the ground terminal to the ring terminal under the bolt.
The little red wire was on there when I got it.
Either the probes didn't get a good contact or the red grounding wire has a lot of resistance in it.

No neutral safety switch connection I can see but I'm not surprised.
The green wire from the clutch was broken and frayed when I got the car so I grounded that cable out on the firewall.
It's an either or. You car with the standard transmission has a switch on the clutch or the shifter.
This is from '71 FSM. '72 might still be this style diagram?
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S4 18 ga Dark Green is for cars with Manual transmission.
S4 18 Br/Y* is for cars with an automatic transmission.

The clutch start switch is the ground. When the clutch is depressed, the switch is closed and electricity can flow to ground.

Key was not on or in the car when i did the tests.
Well then the battery terminal shouldn't be connected to anything, right?
You could recheck it, but that seems to be a problem.
Take off the wires and recheck. If it passes then, the short is in the wiring not the relay.
If it is no good, feel free to open it up so you can see how it works and maybe even what's wrong.
A new one or a good used one should be easy to obtain.