Wiring help with 05 to 07 c110 connector gt harness auto

King

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I have a 2005 mustang I bought with a bad wire harness I could only find a 07 harness but the c110 connector is different does anyone have the right diagram for it ?
2005 mustang gt auto

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TexasBlownV8

Formerly TexasBlownV6
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It's a lot more complicated than just that one connector, and you are going to run into issues if you just swap a '07 harness into your '05, even if you replace that connector or use the '07 harness as-is.
There are roughly a dozen "circuit changes" between the 2006 and 2007 transition; that one connector was changed in 2006 from the square that was only in 2005. And, muliple body-side changes, both in/out of that C110 and also with the BEC, affecting PCM power and others. Some pins in he C175e connector to the pcm are different, and for the auto, there is at least one pin in the C175t connector if I recall, pins that change positions into the PCM. This is why the 05/06 PCMs are not compatible with 07+ model years.

Now, it's not an impossible conversion, but not ultra simple for most people. I have a spreadsheet wih all the differences, and how I made a '06 PCM and harness work in a '07.
It looks like it would theoretically be simpler to put a 2007 into 2005/2006, like what you're doing. But keep in mind that you WILL HAVE TO CHANGE SOME OF THE WIRES in the C175 connectors to/at the PCM, too, in addition to other changes.
 

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