Ignition switch issues?, Cranks but won't run with key Options

[trojanhorsepower]

So my car starts fine when I turn on the ignition and run the starter with a remote start switch, but not when the key turns powers the starter? This makes me suspect that the ignition switch is turning off the ignition while in the crank position. Is this a common failure point of these switches? or should I be looking somewhere else?

'74 2l 4lcyl

[gereed75]

Thanks Dave.

I am running a Crane optical points set up and a Partsklassic “modernized” three pin CD

This is hard to troubleshoot now because the anomaly conditions only seem to last a very short time in warmer temperatures. They persist long enough in the cold to maybe see what is happening. Fall is coming. Colder days will present better test conditions.

What makes this so perplexing is it seems to work fine starter engaged. If it were the opposite it would seem more logical - engaging the starter might cause a testable voltage drop and I would be looking for a short or high resistance in the starter circuit.

But this set of symptoms makes no sense to me !?!?