look for ground at pin 22 on the ECU. That is the trigger lead to the fuel pump relay. What year car dictates where the relay is. In my 93 it is under the MAF, on my 90 it is under the drivers seat. I would also check the inertia switch in the trunk/hatch area, making sure it isn't tripped. Check all your grounds, and fuseable links. you also might try powering the pump to make sure that it is working.
No info about your car's model year, EFI or carb, no mods listed. Makes it hard to troubleshoot when we don't know what you have.
Therefore, no clue as to which wiring diagram you need. The wiring changed several times between 79 & 95.
That's why it is a good idea to use the sig under the user control panel (User CP) option. It allows you to post your car year & mods, which help greatly when troubleshooting things. No, it is not there for us to snoop and see any "Secrets" you have hidden away under the hood. Be a good stangnetter and update you sig for future reference & don't keep us guessing.