Maybe you need to run your own power and ground to in tank pump and just use a toggle switch like I did. Cheaper and you eliminate that whole circuit for $10.

 

Ok, now I am totally confused. I decided to continue to trouble shoot my problem. Now I have 12 volts into fuel pump relay and only 8 coming out again. I cleaned all connectors and still same low voltage. If I manually ground the fuel pump relay I get 12 volts to all pumps. I put a new distributor in and I am still getting code 18 wich I think is the pip sensor in the distributor. I am not sure if all is connected? Could my computer be bad causing the fuel pump relay to not ground and the pip sensor to not read. If anyone has any ideas I will try anythng. I am spent. Would take it to a shop but I hate to pay the labor cost and I do not know how I would get on the trailer.

 

The most likely problems causing this missing Voltage are:
1.An ‘open’ short between the Fuel Injection Computer (EEC Electronic Control Module) and the Fuel Pump Relay connector.
2.The PIP (Profile Ignition Pickup -which is the crankshaft position sensor inside the Distributor) is BAD and not sending a PIP Signal (Crank Position Signal) to the Fuel Injection Computer.
This was on a web site for testing the fuel pump relay. Sounds like the are connected. This is my second new distributor. Could the PIP wiring harness be grounded or open?

 

It's your selector switch to switch from front to rear tank on the dash mine went out and did the exact same thing I replaced the switch and it fixed it