Solenoid on 72 Blazer

[K5Danny]

Over the weekend my solenoid went out on me. This will be my first time replacing one of these things by the way. I crawled under the truck this evening and yanked it out. Maybe there's an easier way, but I ended up dropping the starter for better access to all of the screws. While removing all of the wires, I noticed a yellow wire (pretty sure it was yellow) was frayed and hanging loose and the small left post of the solenoid had a wire connector without a wire. Do you guys know of a wiring diagram for these things, or if that is indeed the right location for that wire?

Thanks in advance!!

Danny