Fuel Fuel pump

[Redboy88]

Hi I have a 1988 mustang and my fuel pump won’t prime I’ve tried troubleshooting it by going to the ecc connector and only the relay clicks the pump doesn’t prime and has plenty of gasoline I did an engine rebuild and while doing it I relieved the pressure from the fuel lines and my inertia switch is bypassed can anyone help me on the next step or can guide me?
I don’t have any fuel pressure of course from removing and installing fuel lines, my inertia switch is bypassed, I tried with 2 different relays

 

[General karthief]

Do you have power to the pump back by the fuel tank?

 

[AeroCoupe]

Check the inertia switch. Located in the trunk or hatch area behind the trim panel of the driver side rear tail light assembly.