Truck, three days ago, was driven and warm. It was shut off at a
store. Came out and it wouldn't even turn over. Could hear the
solenoid click when key turned on. But no turning the engine
over. What could it be? New plugs, plug wires, distributor cap,
new distributor, new gear reduction reman starter, new positive
battery cable to starter, new coil, new spark plugs, new
ignition module. One ~12, or 14, gauge wire from starter to
alternator has some internal corrosion showing. The negative
black battery ground wire appears somewhat shellacked inside.
The battery checks out to have 12 volts, and the lights were
bright when they still worked. Truck was running all so fine
before it stopped dead.

Tried a new ignition switch in the column today and made things
worse as now headlights aren't working nor dome light, radio,
dash lights, perhaps more too. The switch was from autozone and
there isn't any steering wheel tilt capability. The plunger in
the column that goes into part of the ignition switch seems as
those it came unhooked inside the plastic column shroud and am
wondering how one gets into that area to see where it is
supposed to go. Had the ignition cylinder in the locked
position. Fuses under the dash are OK. One inline alternator
fuse has continuity and am hoping the other one is OK as I
couldn't see where it goes in order to check it. This is a
friends truck and I'm trying to help him with it and so I don't
have any book or manual to work from.

Anyone with good advice will be appreciated, hugely! Been trying
for four days to get it going and nothing is better, and now a
few things are worse. So much for a mechanics career for me!
Help us - please..............!