1989 Jeep Comanche problem

the way this sounds i'd have o check to see if there is a fusible link on the starter. If it does, then it probably burnt up and that's why there is no power, especially since you admit that it got hot so it may have melted the link. It is there to protect the system. You would need to go to starter and youwould see smaller wires connected to bigger ones. That is the fusible link. If it's not looking like regular wire then it's bad. Besides if you have a test light you can tet to see power at starter cable then poke one of hte other wires to se if they have power. I am taking a gguess here as i'haven't worked on a jeep in a while. but it sure sounds like it...