Hi Sam
After trickle-charging my 1984 Toyota's battery to full, my truck would eventually putter out in a similar fashion.
I could eek out a few more miles if I kept the headlights, radio, and brake-lights to a minimum (leading to some questionable driving habits for a week or so).
How's your idle? What I thought was an unrelated occurrence – a slightly high idle and reduced gas mileage – was actually the culprit.
The negative battery ground on a 1984 Toyota pickup runs to the choke. A bad choke will cause a "choke always on" symptom, and a bad ground will keep the battery from charging (even with good fuses, a working alternator, and solid wiring).
Keep on chasing the ghost Sam!