UPDATE: TRUCK RUNS.

Ran to Autozone, bought replacement starter switch, 3 x 100A fusible links (just in case). Came home, pulled button, connected the meter one more time. This time, it worked perfectly. Ugh.

Bent the blades in the link holder together, connected the battery, and bypassed the switch. Starter turned over. Replaced the starter switch, hopped in the seat, truck rumbled to life. Ugh.

Now it looks like I just need to figure out how to get the old blades out of the link holder by the battery. The other links in there slide over blades on the holder, but the 100A unit has it's own blades which look like they get pushed into a slot. A bit apprehensive about this, but it is what it is.

EDIT: Never actually had to replace a bolt-in fusible link before. I've easily got 300,000 miles on cars I've played with. Fortunately, Google Images turned up a picture from a thread over here. http://www.4x4wire.com/forums/showflat.p...rt=all&vc=1

Crazy. Truck runs. Feels a bit stronger, though I bet my previously marked dizzy timing line isn't right anymore. Gonna put a light on it and see what develops. All's well that ends well.