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Old 06-17-2013, 09:05 AM
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Mustang EFI in a 31 PU

I have a 2007 Mustang V6 4.0 & trans (5R55S) in my 31PU. My knowledge of EFI leaves a lot to desire.(I'm 65 yrs old) I have the engine harness, PCM, underhood fuse/relay box, gas pedal from the original car. I bought an SCT handheld tuner with a program to turnoff the PATS. And I got the wiring schematic. HELP PLEASE!!! I don't know where to start. I have an ignition switch (S10), but can't figure where to wire it in. I have figured out which wire is what with the switch. My PCM has 3 plugs, I have 2 of them, eng and trans I hope. My underhood fuse box has 4 plugs, I have one. It seems to me that if I knew where to wire in the ignition switch, that hopefully it would fire. All my sensors are plugged in, but the AC pressure switch and the power steering pressure switch. Do I need more from a 2007 Mustang. I have contacted Painless and Ron Franis about a wiring harness. But they only do 5.0, 4.6, or even 2.3 engines. I appreciate any help or advise on how to get it running. I have the chassis in mockup and want to get it running before proceeding on. Thanks Guys

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