[aerohead]

Purchased a new igniter from AutoZone.Made no difference at all.Essentially all ignition components are new now.
From 4-sources I'm constructing a sort of master electrical schematic which represents the actual truck.No single source,even Toyota's actually represents all the power/signal/and cross-talk pathways required for the truck to run.
And the published schematics never physically match the layout of the actual components,which causes my puny brain to slow to a crawl as I attempt to mentally transpose the electrical architecture.
Weather will be near record highs this week and I'll start at the battery and work through the pathways and see if I can isolate either an open circuit or faulty ground.
There are some relays which need to be tested and they 'can' be bench tested,so maybe that will bear fruit.
If nothing else,I'll know more about the truck than ever before.
The little Honda is getting me around and averaging 51.2 mpg in the short trips to and from Denton.