Ignition woes

Even though my short(s) is not fixed, I plan to leave the 3 fuses out, hook up my ignition switches at the bottom of the steering wheel and check out cranking voltage at the coil, and check the total voltage drop at the + coil in run and when cranking.
Well thanks, but I don't understand why you would experiment with the ignition circuit when there is an electrical short.
To me, its like having a leak in the plumbing. The pressure and flow won't be sufficient where its needed, and its draining the battery.
Just so the others here can follow.
1970 Barracuda w/ hemi - pretty much all original.
All multi-connectors at the bulkhead disconnected.
Steering column key switch connector disconnected.
With a jumper between fusible link/relay and bulkhead feed. There's power on the switched accessory buss of the fusebox.

My suggestion is to remove the three fuses on the switched accessory buss.
The goal is to narrow down the wires and locations where the mean feed could be connecting to a switched feed.
At some point you'll have to trace harnesses and maybe even unwrap them. But if its the tail lights/ stop light circuits, then there's no point opening the harness around the mainsplice, etc etc.