s13: blue/green from the dash plug by the glove box, to the green/yellow main harness plug by the battery tray.
the ground signal from the request will click over the ac relay giving power to your compressor......i would also recommend wiring up the fast idle control device (FICD) so your idle doesn't drop too low when the compressor's on. run a jumper wire from your ac compressor's blue/red to your FICD 4 pin grey plug's blue/red to accomplish this.
Dave
__________________
 RB25 280z GT30/76R 441hp/381tq 11.9@125
|