as far as i know, there is no fuse - only the fusable link off the solenoid.
the wire colors might not match up with whatever reference you are using. it is just a generic black Ford relay. should be 4 wires on it (like most other relays).
you should be able to feel the relay energize when the key is turned on. now, the pump primes when the key is first turned on, but after that, i dont think the relay has juice to it (until you start the car - i could be wrong though, but that seems logical).
once you find the relay, we can help you a lot more. the FP is one thing you dont want to play with - a spark and fuel dont mix (or i should say, mix very well). be careful and all that.
i just re-read this mess of a thread. now if you know your inertia switch has no power to it.....IIRC, the inertia switch gets juice from the power relay (it then goes through the inertia switch and to the FP relay).