Hey @don I think the op is looking for a pinout diagram of the pcm from the wiring section of the service manual.
It's usually in chapter /cell 150, called "connector views" (though that # does change)
Older Ford wiring manuals called it C175, or C185 or there abouts. IF the PCM had more one, it would have a letter after it like C175b, etc.
Example shown Below from '93 f-series for lack of a better one.
(image removed to avoid confusion)
Op, you should check eBay for the paper evtm (wiring manual) or service DVD, they are cheap. Also, only buy the official Ford manual /DVD. The red DVDs usually have the whole model range for the lower numbered model year. So in your case you would look for a 2004—2005 dvd. You may get lucky with a 2003-2004, but in my experience, it's never the full range for the second year. You also have to turn off auto update time and roll your computer date back to when it was published.
https://www.ebay.com/itm/313053412067
https://www.ebay.com/itm/264443402189
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