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

Other than little "glitches" like an early early 75 with a 74 interlock (who knows) the ignition switch/ start/ run/ bypass stuff always worked the same

The "usually brown" IGN2 comes off a contact in the ign switch and is ONLY hot during start. It goes through the ignition switch connector, the bulkhead connector, and off to the coil + end of the ballast. There should not be much in that circuit.

I was unaware that the ign2 ever went through the interlock. It has always been the "start" wire (normally yellow) I see in the diagram that the brown is branched off to the interlock box to provide a signal, but it should not be series/ broken by anything there

OP: The oval symbols with CE-x, CI-x etc are connector numbering. Go on several pages in the manual past the diagrams, and there are some charts in there. They show what those connectors look like and how they are wired, and a location description