Electrical driving me nuts

Year and model...
Offhand, in general, when it acts up, see if the coil is getting power in the start position. If not, start tracing it back from there and see where the feed is interrupted. Pay special attention to the bulkhead connections.
It's the IGN 2 feed from your switch on the wiring diagram in your Factory Service Manual.
You Do have a FSM, don't you?
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