GMC Forward Control P3500 (1985-1999) 5.7l (vin r), a/c circuit

A/C COMPRESSOR CLUTCH RELAY (ENGINE BULKHEAD RELAY BRACKET) A/C COMPRESSOR HIGH PRESSURE CUTOFF SWITCH (REAR OF COMPRESSOR) A/C COMPRESSOR REFRIGERANT PRESSURE SWITCH (REAR OF COMPRESSOR) A/C ENABLE BLK WIRE DIODE A/C COMPRESSOR CLUTCH DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ENG-BAT FUSE GAUGES FUSE GRN WIRE GRY WIRE HOT AT ALL TIMES HOT IN RUN OR START I/P FUSE BOX ORG/ WIRE PNK WIRE VEHICLE CONTROL MODULE (LEFT RADIATOR SUPPORT) A/C REQUEST WHT WIRE