Ford Aerostar I (1986-1997) brake on/off (boo) switch (on brake pedal support) Wiring diagrams

3-4/4-3 SHIFT SOLENOID BLK WIRE BLK/LT GRN WIRE BRAKE ON/OFF (BOO) SWITCH (ON BRAKE PEDAL SUPPORT) BRN/WHT WIRE DATA LINK CONNECTOR (DLC) (LEFT REAR OF ENGINE COMPARTMENT, ON SAFETY WALL) DIFFERENTIAL SPEED SENSOR (DSS) (TOP OF REAR AXLE) DK BLU WIRE DSS INPUT DSS RETURN DSS TEST CONNECTOR (LEFT REAR OF ENGINE COMPARTMENT, ON SAFETY WALL) ENGINE COMPARTMENT FUSE BOX ENGINE CONTROLS SYSTEM (IGNITION SYSTEM) PNK WIRE FUEL PUMP RELAY FUSE 1 FUSE 18 FUSE LINK E 20 GA- FUSE LINK G (20 GA- FUSE LINK J (20 GA- FUSE PANEL GRN WIRE GRY WIRE GRY/BLK WIRE GRY/ORG WIRE GRY/RED WIRE GRY/WHT WIRE HOT AT ALL TIMES HOT IN RUN HOT IN START OR RUN INSTRUMENT CLUSTER LT GRN WIRE LT GRN/RED WIRE MALFUNCTION INDICATOR LAMP (MIL) (CHECK ENGINE) ORG/RED WIRE ORG/YEL WIRE PCM POWER RELAY PCM POWER RELAY DIODE PNK 523 WIRE PNK WIRE PNK/BLK WIRE PNK/LT BLU WIRE PNK/LT GRN WIRE PSOM MODULE RED WIRE RED/LT GRN WIRE SPEED OUTPUT STI CONNECTOR (LEFT REAR OF ENGINE COMPARTMENT, ON SAFETY WALL) TAN/ORG WIRE THROTTLE POSITION (TP) SENSOR (TOP CENTER FRONT OF ENGINE, ON THROTTLE BODY) TORQUE CONVERTER CLUTCH (TCC) SOLENOID WHT/PPL WIRE YEL WIRE

3-4/4-3 SHIFT SOLENOID BLK WIRE BLK/LT GRN WIRE BRAKE ON/OFF (BOO) SWITCH (ON BRAKE PEDAL SUPPORT) BRN/WHT WIRE DATA LINK CONNECTOR (DLC) (LEFT REAR OF ENGINE COMPARTMENT, ON SAFETY WALL) DIFFERENTIAL SPEED SENSOR (DSS) (TOP OF REAR AXLE) DK BLU WIRE DSS INPUT DSS RETURN DSS TEST CONNECTOR (LEFT REAR OF ENGINE COMPARTMENT, ON SAFETY WALL) ENGINE COMPARTMENT FUSE BOX ENGINE CONTROLS SYSTEM (IGNITION SYSTEM) PNK WIRE ENGINE COOLANT TEMPERATURE (ECT) SENSOR (TOP LEFT FRONT OF ENGINE) FUEL PUMP RELAY FUSE 1 FUSE 18 FUSE LINK E 20 GA- FUSE LINK G (20 GA- FUSE LINK J (20 GA- FUSE PANEL GRN WIRE GRY WIRE GRY/BLK WIRE GRY/ORG WIRE GRY/RED WIRE GRY/WHT WIRE HOT AT ALL TIMES HOT IN RUN HOT IN START OR RUN INSTRUMENT CLUSTER LT BLU/ORG WIRE LT GRN WIRE LT GRN/RED WIRE MALFUNCTION INDICATOR LAMP (MIL) (CHECK ENGINE) ORG/ WIRE ORG/RED WIRE ORG/YEL WIRE PCM POWER RELAY PCM POWER RELAY DIODE PNK 523 WIRE PNK WIRE PNK/BLK WIRE PNK/LT BLU WIRE PNK/LT GRN WIRE PSOM MODULE RED WIRE RED/LT GRN WIRE RED/YEL WIRE SPEED OUTPUT STI CONNECTOR (LEFT REAR OF ENGINE COMPARTMENT, ON SAFETY WALL) TAN/ORG WIRE THROTTLE POSITION (TP) SENSOR (TOP LEFT FRONT OF ENGINE, ON THROTTLE BODY) TORQUE CONVERTER CLUTCH (TCC) SOLENOID WHT/PPL WIRE YEL WIRE

BLK WIRE BLK/WHT WIRE BRAKE ON/OFF (BOO) SWITCH (ON BRAKE PEDAL SUPPORT) BRN WIRE BRN/WHT WIRE BRN/YEL WIRE DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ELECTRONIC 4 WHEEL DRIVE INDICATOR ELECTRONIC 4-WHEEL DRIVE MODULE (UNDER RIGHT SIDE OF LEFT FRONT SEAT) FRONT AXLE SPEED SENSOR (MOUNTED ON TOP LEFT SIDE TRANSFER CASE) FUSE 1 FUSE 15 FUSE PANEL GRN WIRE GRY WIRE GRY/RED WIRE HOT AT ALL TIMES HOT IN RUN INSTRUMENT CLUSTER LT GRN WIRE LT GRN/RED WIRE NCA WIRE ORG/ WIRE PARK/NEUTRAL POSITION SWITCH (LEFT SIDE OF TRANSMISSION) REAR AXLE SPEED SENSOR (MOUNTED ON TOP RIGHT SIDE OF TRANSFER CASE) RED WIRE RED/WHT WIRE SOLID STATE TRANSFER CASE CLUTCH SOLENOID (TOP RIGHT SIDE OF TRANSFER CASE) WHT WIRE

13 14 ISOLATION SOL OUTPUT DUMP SOL OUTPUT BLK WIRE BLK/ORG WIRE BLK/WHT WIRE BRAKE FLUID LEVEL SWITCH BRAKE ON/OFF (BOO) SWITCH (ON BRAKE PEDAL SUPPORT) DIFFERENTIAL SPEED SENSOR DK GRN WIRE DK GRN/YEL WIRE DSS RETURN DSS INPUT DSS TEST CONNECTOR (LEFT REAR OF ENGINE COMPT) DUMP VALVE SOLENOID FUSE 1 FUSE 18 FUSE 4 FUSE 7 FUSE PANEL HOT AT ALL TIMES HOT IN RUN HOT IN START OR RUN IGNITION SWITCH INSTRUMENT CLUSTER REAR ABS INDICATOR INSTRUMENT CLUSTER SYSTEM ISOLATION VALVE SOLENOID LOCK OFF LT BLU/PNK WIRE LT BLU/RED WIRE LT GRN WIRE LT GRN/BLK WIRE LT GRN/RED WIRE LT GRN/YEL WIRE NCA WIRE PNK/LT GRN WIRE PRESSURE DIFFERENTIAL WARNING SWITCH PSOM MODULE (INSTRUMENT CLUSTER) RABS TEST CONNECTOR REAR ANTI-LOCK BRAKE MODULE (RABS) (BEHIND CENTER OF I/P, BELOW ASHTRAY) RED WIRE RED/PNK WIRE RED/YEL WIRE RUN WIRE SWITCHED POWER 2 3 LOW FLUID LVL INPUT DIFF SENSOR GROUND MODULE GROUND TAN/LT GRN WIRE TAN/WHT WIRE YEL/LT GRN WIRE