As I’m learning more about the bike and what is working and what’s not I realize there’s a fuel tank sensor.  Apparently it does not work.  Why doesn’t it work?  Well 1) the wires connecting it to the tachometer gauge are missing, and b) look at the picture, apparently it was leaking gas so a previous decided to simply seal it in order to fix it.  One of these days when I have a spare gas tank I might see if i can fix this …