NGC or GPEC2?

These type questions for example AC clutch control can be answered by either wiring diagrams and or also factory or also aftermarket service information as in ALLDATA or Mitchell On Demand or other user platforms but that way you can investigate your concerns for the exact year make model you are wondering about.

I appreciate that, good point.

FWIW, I did look at the pinout I have for the NGC controller and don't see an "AC on" input. But not everything is labeled so it could be there.

Thanks.