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[font="Segoe UI", "Helvetica Neue", Helvetica, Roboto, Oxygen, Ubuntu, Cantarell, "Fira Sans", "Droid Sans", sans-serif]the holley pcm has one wire to control the fuel pump
[font="Segoe UI", "Helvetica Neue", Helvetica, Roboto, Oxygen, Ubuntu, Cantarell, "Fira Sans", "Droid Sans", sans-serif]I have it triggering the stock relay similar to factory, however the Holley PCM sends a 12V+ signal, the factory PCM sent a ground. So for this truck I grounded out the fuel pump relay and sent the 12V+ fuel pump control to the VPRM feed on the fuel pump relay, so the Holley triggers the + feed of the relay.
[font="Segoe UI", "Helvetica Neue", Helvetica, Roboto, Oxygen, Ubuntu, Cantarell, "Fira Sans", "Droid Sans", sans-serif]. Fuel pump power from fuse, through stock relay, triggered by pcm, power through inertia switch to pump. My problem is in the wiring I used, I am using a 07 dash with a 05 under hood harness, there are some slight changes I need to overcome. I found the fuel pump wires from the 05 harness right now they are [font="Segoe UI", "Helvetica Neue", Helvetica, Roboto, Oxygen, Ubuntu, Cantarell, "Fira Sans", "Droid Sans", sans-serif]not going to the fuel pump![font="Segoe UI", "Helvetica Neue", Helvetica, Roboto, Oxygen, Ubuntu, Cantarell, "Fira Sans", "Droid Sans", sans-serif]! I will use a test light and confirm the signal is present.
[font="Segoe UI", "Helvetica Neue", Helvetica, Roboto, Oxygen, Ubuntu, Cantarell, "Fira Sans", "Droid Sans", sans-serif]This is OKAY I expected this............ I can wire up a starter and fuel pump in my sleep.[font="Segoe UI", "Helvetica Neue", Helvetica, Roboto, Oxygen, Ubuntu, Cantarell, "Fira Sans", "Droid Sans", sans-serif] Just needed to know what hoops to jump through next. The 07is a little bit different then all the trucks I have done before......
[font="Segoe UI", "Helvetica Neue", Helvetica, Roboto, Oxygen, Ubuntu, Cantarell, "Fira Sans", "Droid Sans", sans-serif]That has never stopped me
Last edited on Sun Oct 9th, 2022 01:54 pm by Eddie Money
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2007 Sport 4door 4x4 4.0L SOHC V6 Ranger