St165 with 4th gen swap AC

I've had my st215 engine running in my st165 for over a year. When I did the swap I didn't install the AC. Now I want to put it in cause it's getting hot. I have almost everything figured as far as wiring. My only question is with the ECU. The st165 ECU had one pin that had something to do with the compressor clutch. The st215 ECU has two pins that go directly to the AC computer. Can I just wire it as was done originally in the st165 and not worry about the ECU? Or does anyone know to include the new ECU?

Hmmm, not sure. Why not use the st165 compressor to make things easy? :shrug:

The compressor isn't the problem I'm having. It's the wiring of the ECU. I'm wondering how to make the st165 ac system work with a st215 ECU.

i think the wiring to the ecu is only to control an ac idle up valve. otherwise i wouldnt worry bout it, you do need to make sure the ac amplifier sees the tach signal from the igniter. or you could just hard wire the a/c to come on with a/c button and bypass the pressure switches/safeguards.