Dodge Ram Wagon B1500 (1996-2002) a/c comp rly ctrl a/c pressure sig a/c switch sense Wiring diagrams

1 2 3 PRESS SW OUTPUT IGNITION A/C SWITCH SENSE A/C COMP RLY CTRL A/C PRESSURE SIG A/C SWITCH SENSE A/C COMPRESSOR A/C COMPRESSOR CLUTCH A/C COMPRESSOR CLUTCH RELAY (IN POWER DISTRIBUTION CENTER) A/C CYCLING SWITCH (IN FRONT EVAPORATOR COIL FINS) A/C HEATER CONTROL A/C HIGH PRESSURE SWITCH (ON DISCHARGE LINE, NEAR A/C CONDENSER) A/C LOW PRESSURE SWITCH (ON SUCTION LINE, NEAR FILTER DRIER) A/C SELECT DEFROST A/C SWITCH SIGNAL AMPLIFIER BLEND AIR DOOR ACTUATOR (UNDER DASH, AT TOP RIGHT END OF DISTRIBUTION DUCT) BLK WIRE BLK/BRN WIRE BLK/VIO WIRE BLOWER MOTOR (IN ENGINE COMPART- MENT IN BLOWER HOUSING) DK BLU WIRE DK BLU/BLK WIRE DK BLU/ORG WIRE DK BLU/RED WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE FAN HIGH FUSE 5 GRN WIRE HIGH BLOWER RELAY (IN ENGINE COMPARTMENT, ON HEATER-A/C HOUSING TOP COVER) HOT AT ALL TIMES HOT AT ALL TIMES POWER DISTRIBUTION CENTER FUSE 4 HOT IN RUN JUNCTION BLOCK FUSE 2 HVAC IGNITION RUN RELAY (IN POWER DISTRIBUTION CENTER) JOINT CONNECTOR NO.1 (LEFT SIDE OF DASH) LOW MED 1 MED 2 LT BLU WIRE LT GRN/GRY WIRE LT GRN/WHT WIRE NEAR BOTTOM OF BRAKE BOOSTER) OFF REC PANEL BI-LEVEL OFF REC PANEL BI-LEVEL FLOOR MODE DE-FOG DEFROST ORG/ WIRE POWERTRAIN CONTROL MODULE (CENTER OF FIREWALL) REAR A/C REAR A/C- HEATER UNIT RED WIRE RED/VIO WIRE RED/YEL WIRE TAN WIRE VIO WIRE VIO/WHT WIRE WHT WIRE YEL WIRE

1 2 3 A/C SWITCH SENSE IGNITION A/C SWITCH SENSE A/C COMP RLY CTRL A/C PRESSURE SIG A/C SWITCH SENSE A/C COMPRESSOR CLUTCH A/C COMPRESSOR CLUTCH RELAY A/C CYCLING SWITCH (IN FRONT EVAPORATOR COIL FINS) A/C HEATER CONTROL A/C HIGH PRESSURE SWITCH (ON DISCHARGE LINE, NEAR A/C CONDENSER) A/C LOW PRESSURE SWITCH (ON SUCTION LINE, NEAR FILTER DRIER) A/C SELECT FLOOR MIX DEF A/C SWITCH SIGNAL AMPLIFIER BLEND DOOR ACTUATOR (UNDER DASH, AT TOP RIGHT END OF DISTRIBUTION DUCT) BLK WIRE BLK/ORG WIRE BLK/TAN WIRE BLK/VIO WIRE BLOWER MOTOR (IN ENGINE COMPART- MENT IN BLOWER HOUSING) BLOWER MOTOR RELAY BLOWER MOTOR SPEED SWITCH DK BLU WIRE DK BLU/BLK WIRE DK BLU/ORG WIRE DK BLU/RED WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE EXTENDED BODY FUSE 12 FUSE 13 GROUND HIGH BLOWER RELAY HOT AT ALL TIMES HOT IN RUN FUSE BLOCK (ON LEFT END OF DASH) FUSE 10 J/C 3 (LEFT SIDE OF DASH) LOW MED 1 MED 2 LT BLU WIRE LT GRN WIRE LT GRN/GRY WIRE LT GRN/WHT WIRE MAX OFF PANEL (A/C) BI-LEV PANEL (VENT) MODE ORG/ WIRE POWER DISTRIBUTION CENTER (IN ENGINE COMPARTMENT, NEXT TO BATTERY) POWERTRAIN CONTROL MODULE (PCM) (CENTER OF FIREWALL) REAR A/C REAR A/C- HEATER UNIT REAR WINDOW DEFOGGER SWITCH RED WIRE RED/DK GRN (OR NCA) WIRE RED/DK GRN WIRE RED/YEL WIRE RELAY & FUSE BLOCK (ON LEFT END OF DASH) STANDARD BODY TAN WIRE VIO WIRE VIO/WHT WIRE WHT WIRE YEL WIRE