Unfortunately, for whatever reason it didn't work. The ECU is not detecting an input toggle and isn't activating the clutch out. Still going to need to troubleshoot. So, I just bypassed the ECU altogether, the "AC ON" wire to the A/C clutch relay wire.
The only downside to this I can see is that the A/C clutch will still engage even if the engine is off. KPro isn't smart enough yet to up engine idle when A/C toggles, otherwise that would be a possible disadvantage too.
From there, it was just a matter of getting the Accord A/C compressor I used connected to the wiring harness. The Accord uses a 3 pin connector with two grounds, whereas the Insight harness for A/C uses a 1-pin for power and relies on engine ground straps for grounding. I cut the Accord connector off and soldered the wire from my Insight compressor, and viola! I have air conditioning again.
Here's a picture of the otherwise stock Insight A/C system on the Acura TSX K24 engine:
