AC Wiring harness vs. Non-AC Wiring harness

Real quick, it’s not a Spirit, it’s a Sport. Damn auto-correct.

Best I can tell the harness for the engine bay and beyond is bundled as a single harness, but it appears to have 3 separate plugs when connecting to the bulkhead. I was thinking kinda the same thing as you mentioned in that there were not to many options outside of AC. As such, it should be an easy retro to add AC to the/a “non” AC harness....

I don’t have the original to compare anything to.