Fuel pump not working, fuse or relay?

If you have a fuel module, the voltage to the fuse may come from the fuel module. My info showed for 5.7 hd only and then said L05 and L19, which I guess is a manufacturer ID designation.

The only location I found for the module, where applicable, is next to the pcm. The wiring colors, brown is ignition feed, Black with white tracer is ground for the module, Tan with white tracer is voltage for the fuse. I don't like trying to follow those spaghetti diagrams, sometimes I lose my circuit. LOL

It should be located by or next to the computer. Under the dash, passenger side, behind glove-box cavity.

I gave you the wiring colors for the connector. I'd check the circuits. You didn't list the liter size of your engine?

I've already told you where the ecm and fuel module should be located, behind the glove box cavity on the passenger side. You need to test the circuits for the fuel module.

You are using the throttle body injection correct? The regulator in the throttle body will not let the fuel pressure get higher because it is made to run on 15 psi. If you are trying to maintain the computer then you need to get in touch with Jet Electronics and get the computer redone to accept what you have done. I have done this before for a customer with a 383 stroker and it was a learning curve. The older computers do not like the bigger cams makes them over fuel and then the O2 sensor kicks in and leans it and so forth.