This is not a GM style starter, it is a small Japanese starter made by IHI.
There is only one prong to connect from the ignition switch, so that part can't be messed up! I marked the connection before I disconnected it, and took pictures, too, so while I may have screwed something else up, I'm certain I have that part wired correctly.
I have not bench tested the starter. I did try jumping the 12V prong on the starter to the solenoid connection, but got no action from the starter, only some sparking when I try to connect.