Ford Repair: fuel pump/ eec relays, oil pressure switch, shade tree mechanics

Question
clay, first of all, let me thank you for "volunteering" your time to this.  as now a days its very hard for shade tree mechanics to work on vehicles.  my problem is i have a '91 ford explorer that is having some serious fuel pump problems.  ive replaced the pump, filter, and even the oil pressure switch. (i heard if its bad, the computer shuts down the pump)  anyway, i think the fuel pump relay is what is blowing my fuses.  as well as the eec relay.  i have a chilton's scematic, but it doesnt show you the locations of them, just that it uses them.  WHERE IN THE WORLD ARE THESE LOCATED????? haha  i think once i change those out, hopefull, it should fire right back up!  i had this problem about 2 weeks ago, and changed the pump, filter and switch.  it ended up all i had to do was change out the fuse.  now when i put a new fuse in, it immediately blows that fuse.  also the eec fuse blows.  somewhere there is a short causing this, but i figured i would start with the relays.  if you could let me know where to find these i would be much appreciative!  
once again, thank you for your time.  hope to hear from you soon!
darren rapp

Answer
Darren, you could be right - the fuel pump relay may be shorting the circuit and blowing the fuse.  The relays are mounted next to each other, on the passenger side fender well near the A/C blower.  I think the EEC relay has a brown connector and the fuel pump relay has a green connector (if memory serves me) and they may be mounted under a black plastic holder.
The power is supplied by the EEC relay, which supplies power to the FP relay.  The PCM provides the grounds for each of them.  PCM gives ground to the EEC relay anytime the key is on, and to the FP relay for about 2 seconds when the key is turned on, and then constantly if it sees a RPM signal.
After the FP relay, power is sent through the inertia switch (located on the R/F floorboard or kickpanel) and then to the pump.  
Since you're blowing the fuses quickly, I'd disconnect the load (pump) from the circuit and see if the short is gone.  Unplug the inertia switch (it's easier to get to) and that will take the pump and some wiring out of the picture.
A real schematic of the vehicle would help you tremendously.  You can probably still get them from the publisher - Helm, Inc.  The EVTM (electrical vacuum troubleshooting manual) is about $40, I think.
Hope this helps..'
Clay