64 rambler 660 classic ignition issue

According to the '64 Classic/Ambo TSM only the V-8 models had a regular ballast resistor.  On the 6 cyl models that round 75 ohm resistor acts as a ballast resistor to the coil.

The wiring schematic can be confusing, as it has V-8 and six on the same diagram with a note saying "V-8 only". Even has auto and manual trans on the same schematic, with a note for "auto only" items (just one that I can think of, the neutral safety switch).

The six uses an internally resisted coil, no ballast resistor. You can find good 56-65 Rambler wiring diagrams here:
http://www.oldcarmanualproject.com/tOCMP/wiring/5765wiring%20diagrams/ramblerindex.htm

Lots of other manual and brochures on that site, including a full 1973 AMC TSM.

I put a meter on mine today. With engine running it reads 14 1/2 volts at + side of coil and 12 1/2 volts at - side. It has the Petronix ignition and coil.

I've amended the wiring diagram in my TSM to show the resistor is for V-8 only. I at one time had my harness all open and could find no resistor.
As for that other orange with tracer to the other resistor shown next to the battery in the diagram that looks like maybe specific to the charging circuit between regulator and alternator. I know the charging light is also orange with white trace.
Also note that the blue wire coming from the V-8 starter connects to the yellow for the coil, presumably to give it that 12 volts until the starter is released. That blue wire is absent on the 6 cyl starter. 

The wiring diagram I posted a link to aren't from the TSMs, but from some pro manual source, I think that just had wiring diagrams. They are more clearly marked and easier to follow than the TSM diagrams.