import1

90 2500 with an auto and a 350. Little background. Died out while @ idle a couple of weeks ago. started back up moved it across my yard and shut it off. It has not run since! Cranks freely and if you pour gas in it, she'll fire. No fuel pump sound. Here's whats throwing me. There is no check engine light with key on. I have a Snap on scanner and truck will not communicate with that either. I am ASSUMING there is no power to fuel pump as well. What I really need is a complete wiring diagram for this beast if someone has one. There is no power at fuel pump fuse when cranking or when key is turned on. I also don't seem to get any power at relay either. I'm thinking maybe fusible? But where!!?? Any help or info would be praised to the Heavens!!!!!
Jeff

import1

just a quick update and solution in case anyone runs into this in the future. Got a hold of the wiring diagram today and went to the orange wire to the fuel pump relay. This wire should be 12v constant. Mine had none. followed to fusible on firewall. fusible was open. replaced that sucker and she fired up and now the check lite works and my scanner picks up a signal. Time to spring for AllData, i guess! Having the wiring diagram made small work out of a PITA problem!!!!!