1992 ac clutch relay help

compressor wont run, clutch relay on passenger fender is energizing, have no power on the grey wire that is common on clutch relay and also on the condenser fan relay. if i put 12v to the grey wire, it works like it should, the relay will turn on and off with all switches and safeties. does anyone have wiring diagram for this, or know where the grey wire goes to, i see it goes into a bundle of wires under the front cowl and then i lose it. any help would be appreciated.