The No Pulse Prob.

[LandonWatts]

That could explain why when I turn the key the fuel pump just keeps running and doesn't shut off?

And yes, it is coming from the battery side. Let me see if I can't get some better pics up now that I know how to post them!

 

[LandonWatts]

 

[SenorNoob]

As for the yellow wire, The only way I could see that being related to the fuel pump running all the time is if they have bypassed that all together and just run ignition to the pump.. The other wire, I'm not sure on. Maybe someone who has that model truck can snap a pic for you?



Just a thought but maybe that wire went from one relay to the other (the ECU relay) The same yellow wire is supposed to split off and go to both.

If that's the case then you probably don't have power to your computer. Check out the wiring to the "EEC Power Relay" I only see three wires on it in that pic. It should have FOUR according to that diagram.