You're making some progress!

Most likely (unless someone swapped the relays around on the firewall) you have a problem in the fuel harness. Check the wires for continuity if you have a multimeter. If not, check to be sure the pins in the connector are making good contact with the pump connector.
Your fuel lines are a feed line and a return line. The feed goes to one end of the fuel rail, the return line takes excess fuel back from the other end of the fuel rail. The fuel pressure regulator (FPR) keeps the pressure in the line at 43psi. Both fuel lines go to two metal hard lines that are bolted to the intake manifold. There are two more small sections of line from that bracket to the fuel rail itself. It's easiest to remove the upper manifold to see all that though.