Car is a 1991 Civic Si. I just got everything installed, and there is one redish/orange wire coming off the compressor. And on the (if your looking at the car from the front) the right fan closest to the compressor has 2 wires coming off it. A black wire with 2 red dots on it, and a blue wire with 2 red dots on it.


WTF goes where ?

 

When I did mine, I just pulled the entire harness from a donor car. It's a separate loom and it runs through the firewall grommet with the AC lines, over the shock tower where one wire plugs into the fuse box, down underneath the battery, one plug goes into your rad fan, and then it loops under the fans to the ac fan and a single wire goes to the compressor.

Behind the dash it plugs into the evap box, and another plug that is integrated into the dash loom that goes to the button. You can cut open the dash loom from the donor car just above the ECU and pull the AC button wires out.

 

I would like to know also. If you don't mind me asking where does the AC harness plug into under the dash, I have heard it is by the blower motor, but I am not seeing it. I have a 91 civic SI as well, and am putting the AC back in.

 

Well I have everything needed under the dash. My ac button still lights up when i push it lol. So im ASSUMING everything is there, and that all i need to do, is wire this **** up and im good to roll