So far what I have done to the truck is: Charged the batteries, Installed the doghead starter relay, Put some fuel with injection cleaner in, Replaced the fuel filter. When I tried to turn the truck over I could not hear the starter engage. So before I tore out the starter I tested the relay to determine if i was getting power to the solenoid. Turns out I wasnt getting power to the relay at all. I pulled up the wiring diagram and found that i had a wire that had been worn in two. I replaced the wire and I am now getting power to the relay and from the relay to the solenoid. The truck still wouldn't turnover so I pulled the starter and used a set of jumper cables to test it. The motor on the starter is fine but the solenoid was not engaging when energized. So now I am waiting on the new starter that I ordered to arrive.