When I got my 64 320 it hadn't run in many years and the battery was dead. The battery cables were hooked up thus:
Red cable--->Negative terminal on the battery--->Starter
Black cable--->Positive terminal--->Engine block
My impression this was a positive ground set-up.
Last weekend I put a new battery in the truck because I'm finally ready to try to start it up. Starter and generator have been rebuilt and re-installed (carburetor also).
I connected the red battery cable, which is connected to the starter again, back to the negative terminal.
When I tried to connect the black cable, which is again connected to the engine block behind the generator mounting bracket, I couldn't attach the black cable to the battery without some small sparks, hissing, and popping, almost like a dirty weld without the bright arc. I disconnected the battery pretty quickly, afraid I was going to fry something.
I should say I'm much more confident on the mechanical than the electrical aspects of these old trucks. Also I'm suspicious of the truck's wiring because it has definitely been spliced in a few places.
Anybody have any idea what my problem could be?