A/C wiring help

[cmat1120]

I know that questions like this have been asked, but they have all been so specific I've found them unhelpful. Basically I don't know where to start for wiring up my a/c. Here's what I have:
91 S13 Coupe
S13 Blacktop SR20DET
KA Compressor with plug and wire(green) sticking out of it
A/C lines and stuff
A/C controller for dash
E5 ECU

That's all I can think of that might pertain to this. I think i have the physical part of this down so I still need to know where that wire on the compressor goes, what wires need to be messed with at the ecu and what wires from the controller need to be messed with(I do have the chassis plugs for it, but idk if the wires on those plugs need to be attached anywhere on the ecu). Really all care about is getting a/c working at this point(its over 105 F almost every day now). If I could keep idle kick up that would be great, but I'm totally ok with any bypassing or switches if it makes my life a good deal easier.

Thanks so much!

[cmat1120]

So update I got the a/c controls in. What works is the fans turn on and i have the hot cold slider connected. The buttons other than A/C light up but no matter what button I press the air only comes out on the feet. Does anyone know what the cause of that might be?