Ford Repair: Fuel problem, radiator support, fuel pumps

Question
Hi Dave how are you today?  I have a 1992 F250 custom pickup 4.9L. The problem i have is the engine isn't getting any fuel.  The fuel pump don't work I have power to the FP relay.  I don't have any ground signal from the pcm to the FP relay when i do ground it the fuel pump does operate but won't start because i don't have a ground signal from the PCM to all the fuel injectors, i have  power to both sides of the injector, also i have no power to the fuel tank transfer switch & inertia fuel shut off.  Does this means i have a PCM problem.  I really would appreciate if you can help me with this please.
Thanking you Mark

Answer
I don't have a service manual or EVTM for this vehicle.  A 1996 F-Series grounds both fuel pumps at the top-left of the radiator support.  The fuel pumps are supplied power when the key is turned on.  A very common problem for these vehicles is a bad tank transfer switch.  Ford issued an extended warranty on this part for, I think, 10 years or 150,000 miles.

I hope this helps,
Dave