Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD1991CLUB WAGON E250, 7.3 MREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 3 (WIRING DIAGRAMS)COMPONENT LOCATION MENU
1991 Ford Club Wagon E250, 7.3 M
Component Location Menu
1991 Ford Club Wagon E250, 7.3 MSECTION Component Location Menu
WARNING: This page is about a different car, the 1992 Ford Aerostar. However, it is still accessible from the selected car via links, so may be relevant.
COMPONENT LOCATIONS
| Component | Figure No. Location |
|---|---|
| A/C WOT CUTOUT RELAY | 5 (B 16) |
| A/C/HEATER SWITCH | 5 (A 16) |
| ABS SYSTEM | 8 (A-B 28-29) |
| AIRBAG SYSTEM | 9 (C-E 32-34) |
| ANALOG INSTRUMENT CLUSTER | 8 (C-E 28) |
| AUTOLAMP DUAL COIL RELAY | 7 (D 24) |
| AUXILIARY BLOWER SWITCH | 5 (B-C 19) |
| AUXILIARY POWER RELAY | 5 (A 18) |
| BACK-UP LIGHT SWITCH (M/T) | 9 (D 35) |
| BACK-UP NEUTRAL SAFETY SWITCH (A/T) | 9 (D-E 35) |
| BATTERY | 1 (A 2) |
| BLOWER MOTOR SWITCH | 5 (A 17) |
| BRAKE FLUID LEVEL SWITCH | 8 (C 31) |
| BRAKE WARNING RESISTOR/DIODE ASSEMBLY | 8 (C 28) |
| BUTTON CONNECTOR | 7, 8 (B 27, E 31) |
| CIG LIGHTERS | 6 (D-E 22) |
| CLOCKSPRING ASSEMBLY | 5,9 (E 17, E 32) |
| CLUTCH SWITCH (M/T) | 4,5 (B 14, D 17) |
| COURTESY LAMP RELAY | 6 (E 20) |
| CRUISE CONTROL AMPLIFIER | 5 (C-E 16-17) |
| COURTESY LIGHTS | 6 (B-C 20-22) |
| DIFFERENTIAL SPEED SENSOR | 8 (B 30) |
| DIGITAL INSTRUMENT CLUSTER | 7 (A-D 24) |
| DIRECTIONAL FLASHER | 4 (D 13) |
| DOOR AJAR SWITCHES | 7,8 (A 27, D 31) |
| ELECTRONIC DISTRIBUTOR LESS IGNITION SYSTEM (4.0L) | 3 (E 8) |
| ELECTRONIC ENGINE CONTROL POWER RELAY (3.0L) | 2 (A 4) |
| ELECTRONIC ENGINE CONTROL POWER RELAY (4.0L) | 3 (A 8) |
| ELECTRONIC ENGINE CONTROL (EEC) (3.0L) | 2 (A-D 4) |
| ELECTRONIC ENGINE CONTROL (EEC) (4.0L) | 3 (A-D 8) |
| ENGINE COMPARTMENT LIGHT SWITCH | 1 (B 1) |
| FUEL PUMP RELAY (3.0L) | 2 (A 7) |
| FUEL PUMP RELAY (4.0L) | 3 (A 11) |
| FUEL PUMP FUEL GAUGE SENDER | 7 (C-D 27) |
| FUSE LINKS | 1 (B 2-3) |
| FUSE BLOCK | 4 (C-D 13-14) |
| HAZARD FLASHER | 4 (C 12) |
| HEATER SWITCH (WITH OUT A/C) | 5 (A 19) |
| HEGO SENSOR (3.0L) | 2 (C 7) |
| HEGO SENSOR (4.0L) | 3 (C 11) |
| HORN RELAY | 1 (C 3) |
| IGNITION COIL (3.0L) | 2 (E 4) |
| IGNITION COIL (4.0L) | 3 (E 11) |
| IGNITION SWITCH | 4 (A 12-15) |
| ILLUMINATED LIGHTS | 4 (D-E 12-15) |
| ILLUMINATED ENTRY TIMER | 6 (D-E 23) |
| INERTIA SWITCH (3.0L) | 2 (A 6) |
| INTEGRAL ALTERNATOR REGULATOR (IAR) | 1 (C 3) |
| INTERIOR LIGHTS | 6 (D-E 20-23) |
| INTERVAL GOVERNOR | 5 (E 19) |
| LCD DIMMING RELAY | 7 (D 27) |
| LIFTGATE WIPER MOTOR | 10 (C 37-38) |
| LIFTGATE WIPER WASHER SWITCH | 10 (B 37) |
| LOW OIL LEVEL RELAY (ANALOG CLUSTER) | 8 (C 31) |
| LIGHT SENSOR AMPLIFIER | 7 (E 24) |
| LUMBER SEATS | 10 (D 36) |
| MAF SENSOR | 2 (C-D 7) |
| MAF SENSOR | 3 (A 11) |
| MAIN LIGHT SWITCH (WITH AUTO LAMPS) | 7 (E 24-27) |
| MAIN LIGHT SWITCH (WITH OUT AUTO LAMPS) | 6 (A 20-22) |
| MULTI-FUNCTION SWITCH | 6 (A-C 23) |
| POWER DOOR LOCKS | 10 (A-C 36-38) |
| POWER MIRRORS | 9 (B-C 34-35) |
| POWER WINDOWS | 9 (A 34-35) |
| RABS MODULE | 8 (A 28) |
| REAR DEFOGGER SWITCH | 10 (A-B 38) |
| REAR DOOR SWITCHES | 6 (D 22) |
| SEAT BELT SWITCH | 6 (D 22) |
| SHIFT LOCK ACTUATOR | 5 (C 19) |
| SLIDING DOOR AJAR RELAY | 7,8 (B 27, D 31) |
| STARTER RELAY | 1 (B 3) |
| SELF TEST OUTPUT (STO) CONNECTOR (3.0L) | 2 (B 7) |
| SELF TEST OUTPUT (STO) CONNECTOR (4.0L) | 3 (B 11) |
| STOP LIGHT SWITCH | 5 (C 16) |
| TFI IGNITION MODULE (3.0L) | 2 (E 7) |
| TRAILER TOW RELAY MODULE | 10 (E 36-38) |
| WARNING MODULE | 6 (C-D 23) |
| WIPER MOTOR | 1 (E 3) |
| WIPER/WASHER SWITCH | 5 (D 18) |
| 4WD MODULE | 8 (A 31) |
GROUND LOCATIONS
| Component | Figure No. (Location) |
|---|---|
| GROUNDA: (TOP REAR CORNER OF RIGHT FENDER | N/A |
| APRON BELOW HOOD HINGE) | 1 (A 1) |
| GROUNDB: (TOP LEFT CENTER OF SAFETY WALL | N/A |
| NEAR WINDSHIELD WIPER MOTOR) | 1 (A 2) |
| GROUNDC: (LOWER LEFT REAR OF ENGINE | N/A |
| NEAR STARTER MOTOR) | 1 (A 2) |
| GROUNDD: (FRONT OF LEFT FENDER APRON | N/A |
| TO LEFT OF BATTERY) | 1 (D 1) |
| GROUNDE: (3.0L) (RIGHT REAR OF ENGINE NEAR | N/A |
| OIL PRESSURE SWITCH) | 2 (C 7) |
| GROUNDF: (BEHIND CENTER OF INSTRUMENT PANEL | N/A |
| BELOW RIGHT SIDE OF RADIO) | 7 (D 25) |
| GROUNDG: (BEHIND CENTER OF INSTRUMENT PANEL | N/A |
| BELOW LEFT SIDE OF RADIO) | 9 (B 32) |
| GROUNDH: (LEFT SIDE OF REAR HEADER) | 10 (A 39) |
| GROUNDI: (RIGHT SIDE OF REAR HEADER) | 10 (B 37) |
| GROUNDJ: (CENTER OF LEFT "D" PILLAR) | 10 (E 38) |
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.