AC Heater Switch help needed with swap

Hi.

Really need some help here. My 65 Barracuda has factory AC and I need to replace the control switch. I gave up trying to find a 67 and down switch and took a punt on buying a 68 and up switch.

I knew the wiring terminals were different but I figured that same number of terminals, same functions....

I've been trawling the internet for hours now and am more confused that I was before I started.

Has anyone actually used a late model switch in and early A body? And which wires go to which terminals?