Continuing to track down source of no voltage to coil while cranking

This may be a situation where the problem can be narrowed down with continuity tests.
It can be done with an ohmeter/continuity tester or a test light.
I'll assume the first.
Disconnect the battery neg and positive!
1. Clip one lead to battery feed wire (at positive terminal or at the starter relay) and the other lead to the J3 14 Brown wire. It does not have to be connected to the 1/2 ohm ballast resistor.
Turn the key to start and hold it.
Is there good continuity (zero resistance) ?
If not, then do the same test for J3 at the bulkhead.
If yes, reconnect J3 14 Brown to the 1/2 ohm resistor. The clip the tester to the other side of the 1/2 ohm resistor. Turn the start key and hold it long enough to measure the resistance or prove continuity.

Continue following the wires and testing in which ever direction there is no continuity.

One question I have. Where does J3 16 Brown connect?

OK two questions. Did the ammeter show anything unusual when you where attempting to start the car? It should have shown small movement - maybe 5 amps discharging. Less would suggest power is not going through to the ignition. More would suggest a short drawing power away from the ignition coil and ECU.