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5.0L (1979-1995) MustangTechnical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.
hes doing a mass air conversion, your running into the same problem I had, I ended up just splicing into the old harness and it works great. Bypass it, see if it works its not going to hurt anything