I am thinking I will have a prom custom-programed anyway for that engine, so that is not an issue.
So, a part store (Napa...) should be able to sell me the little plug to instal in the big plastic connector, since the 7747 pcm has the pin, right? And then i can just add the wire to the A/C compressor. Seems like the safest way to go, because I fear the same problem as cal1320, engine dropping 200rpm in gear at idle could be an issue...
Do theses little plugs have a specific name, so the parts guy knows what I am talking about?