So I was looking through the engine bay of my newly acquired '85 Fiero GT and found many things disconnected, burnt or cut off completely. I want to fix all of these things but have no idea what they do or where they go. I took pictures of all of them and have the parts I'm curious about circled in red:
This first one looks like some kind of hose that used to be connected to something but is now snipped.

This next one I have 2 parts circled, one is just a hanging connection from a red wire and the other circled part is where one side of the wire connects.

This image is 2 wires that seem to be very out of place, I circled the part of the wire that keeps rubbing up against the exhaust header and melting. I have no idea where the wire goes. I tried tracing it with no luck so I can't reroute it without knowing where its from or where it's going.

This last image is of the radiator fan connector that used to go into a radiator fan relay but not just hangs. I just need to know what each wire on the connector goes to. i.e. fan positive, battery positive, temperature sender... things like that.

I appreciate any help you guys can give... Thank you very very much ahead of time!