S14 A/C Idle issue

[808_silvia]

So I have an issue with my idle not kicking on when I turn on my A/C.

I have a 1996 240sx with a black top s14 zenki sr20det. I used wiring specialties to combine the original KA harness with the SR harness and I'm using the sr20det's ac compressor. The a/c is cold when in use, it just never bumps up the idle when the compressor kicks on which makes it hard to drive and kill gas mileage.

Here's the weird thing.. Although the idle doesnt kick up when the compressor turns on, the idle will kick up if i turn on my head lights just as if I would turn on the a/c in a normal car. The idle will stay high the entire time the headlights are on until I turn it off, the a/c being on or off doesnt have anything to do with the idle going up. Anyone have any ideas on how to fix this?