horn FORD FESTIVA 1991 Service Manual
[x] Cancel search | Manufacturer: FORD, Model Year: 1991, Model line: FESTIVA, Model: FORD FESTIVA 1991Pages: 454, PDF Size: 9.53 MB
Page 20 of 454

Fig. 2: Identifying Ignition Switch Terminals (Festiva)
Courtesy of FORD MOTOR CO.
WIPER SWITCH
For testing information on wiper switch, see appropriate WIPER/WASHER SYSTEMS article in the ACCESSORIES/SAFETY EQUIP
Section.
REMOVAL & INSTALLATION
STEERING WHEEL & HORN PAD
Removal (Capri)
1. Disable SRS. See SAFETY PRECAUTIONS. Ensure front wheels are in straight-ahead position. From rear of steering wheel, remove 4
retaining nuts and washers securing air bag module to steering wheel. Disconnect air bag module-to-clockspring connector.
2. Remove air bag module and place out of the way, with pad facing upward. Disconnect horn and speed control wire harness connectors
(if equipped) from steering wheel. Scribe reference mark on steering shaft and steering wheel hub for reassembly. Loosen steering wheel
retaining bolt 4-6 turns.
"A" (WHT) - "E" (BLU/RED)OFFNo
"ACCYes
"ONYes
"STARTNo
"A" (WHT) - "D" (BLK/RED)OFFNo
"ACCNo
"ONYes
"STARTNo
"A" (WHT) - "C" (BLK/WHT)OFFNo
"ACCNo
"ONYes
"STARTYes
"A" (WHT) - "B" (BLK/BLU)OFFNo
"ACCNo
"ONNo
"STARTYes
CAUTION: On Capri m odels with Supplem ental Restraint System (SRS), observe safety precautions. T he air bag
system is powered directly from the battery and back-up power supply. Before any repairs are
perform ed, disconnect and shield battery ground cable. Disconnect the back-up power supply and wait
at least 15 m inutes BEFORE servicing ANY air bag com ponent. Use caution when working near steering
colum n. Air bag could accidentally deploy at any tim e.
CAUT ION: When rem oving steering wheel, DO NOT use a knock-off type steering wheel puller, or strike the
steering wheel or shaft with a ham m er. A sudden im pact could dam age bearing, or collapse the
Page 3 of 5 MITCHELL 1 ARTICLE - STEERING COLUMN SWITCHES 1991 ACCESSORIES & SAFETY EQUIPMENT Ford Motor C
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Page 21 of 454

3. Position Steering Wheel Remover (T67L-3600-A) on steering wheel. Tighten bolt on remover until steering wheel is loose. Remove
steering wheel puller, steering wheel retaining bolt, and steering wheel.
Installation
1. Ensure front wheels are in straight-ahead position. Route clockspring wiring harness through steering wheel opening. Position steering
wheel on steering shaft and align reference marks.
2. Ensure clockspring wire is not pinched when positioning steering wheel. Install new steering wheel retaining bolt and tighten to
specification. See TORQUE SPECIFICATIONS table at end of article. Connect horn and speed control wiring connectors (if equipped)
to steering wheel.
3. Connect air bag module-to-clockspring connector. Install air bag module. Tighten air bag module retaining nuts to specification.
Activate SRS. See SAFETY PRECAUTIONS. Check AIR BAG light to ensure system is functioning properly.
Removal (Festiva)
From back of steering wheel, remove 2 screws securing horn pad. Disconnect horn wire from horn pad and remove pad. Remove steering
wheel nut. Scribe reference mark on steering shaft and steering wheel hub for reassembly. Using Steering Wheel Puller (T67L-3600-A),
remove steering wheel.
Installation
Position steering wheel on steering shaft and align reference marks. Be sure cutouts in rear cover engage turn signal canceling cam. To
complete installation, reverse removal procedure.
COMBINATION SW ITCH
Removal (Capri)
1. Disconnect negative battery cable. Remove lower steering column cover. Remove center access panel and trim cover under steering
column. Remove left side defroster connector tube. Remove steering column upper retaining bolts. Column will pivot downward and
rest on instrument panel brace.
2. Remove 2 switch retaining screws and remove switch. Grasp switch and lever and pull lever out of switch. Disconnect switch electrical
connectors and remove switch.
Installation
Align key with slot and install lever in switch assembly. Position switch on steering column and install retaining screws. To complete
installation, reverse removal procedure.
Removal (Festiva)
1. Disconnect negative battery cable. Remove steering wheel. See STEERING WHEEL & HORN PAD under REMOVAL &
INSTALLATION. Remove 4 screws from upper half of lower steering column cover and remove cover. Remove upper steering column
cover. Remove 5 clips from lower half of lower steering column cover and remove cover.
2. Release wiring harness clip and unplug 4 harness connectors from back of combination switch. From below steering column, loosen
band clamp securing switch hub to steering column jacket. Pull switch assembly from steering column.
Installation
Slide combination switch assembly onto steering column. Make sure switch assembly is seated and level against end of column jacket. To
complete installation, reverse removal procedure.
HEADLIGHT SWITCH
Removal & Installation (Capri)
1. Headlight off/on switch is located on left side of instrument panel bezel. Disconnect negative battery cable. Pull out center storage
compartment. Remove 2 upper screws, 2 lower screws and heater/radio bezel. Pull outward and remove trim covers located on both
sides of steering column.
2. Remove retaining screws and carefully pull instrument panel bezel partially away from dash. Disconnect electrical connector from
headlight switch. Depress tangs on both sides of switch and remove switch from bezel. To install, reverse removal procedure.
IGNITION SWITCH & LOCK CYLINDER
Removal (Capri)
1. Disconnect negative battery cable. Remove lower steering column cover. Remove center access panel and trim cover under steering
column. Remove left side defroster connector tube. Remove steering column upper retaining bolts. Column will pivot downward and
rest on instrument panel brace. steering colum n.
CAUT ION: Rem ove steering wheel carefully to avoid dam aging clockspring wiring, air bag m odule connector, or
accidentally turning clockspring. After steering wheel rem oval, tape clockspring in position to prevent
dam age and keep it from being turned accidentally.
CAUTION: Ensure that no wiring is pinched beneath steering colum n when lowered.
Page 4 of 5 MITCHELL 1 ARTICLE - STEERING COLUMN SWITCHES 1991 ACCESSORIES & SAFETY EQUIPMENT Ford Motor C
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Page 26 of 454

Fig. 3: Identifying Rear Wiper/Washer Switch Terminals (Festiva)
Courtesy of FORD MOTOR CO.
REAR WASHER MOTOR TEST
See FRONT WASHER MOTOR TEST under TESTING.
REMOVAL & INSTALLATION
FRONT WIPER MOTOR
Removal
Disconnect negative battery cable. On Capri, gently pry linkage off ball socket at wiper motor arm. On Festiva, remove access plate then gently
pry linkage off ball socket at wiper motor arm. On all models, disconnect wiper motor electrical connector. Remove 4 mounting bolts and
rubber insulators and remove wiper motor.
Installation
Position wiper motor on firewall. Install 4 rubber insulators and mounting screws and tighten to 62-89 INCH lbs. (7-10 N.m). Reverse removal
procedure to complete installation. Check wipers for proper operation.
FRONT WIPER/WASHER SWITCH
Removal & Installation (Capri)
Remove center trim panel and access cover under steering column. Remove 2 screws and remove lower steering column shroud. Disconnect
wiper/washer switch electrical connector and pull wiring from routing clip. Firmly grasp switch and lever and remove from mounting. To
install, reverse removal procedure.
Removal & Installation (Festiva)
1. Disconnect negative battery cable. From back of steering wheel, remove 2 screws securing horn pad. Disconnect horn wire from horn
pad and remove pad. Remove steering wheel nut. Scribe reference mark on steering shaft and steering wheel hub for reassembly. Using
Steering Wheel Puller (T67L-3600-A), remove steering wheel.
2. Remove 4 screws from upper half of lower steering column cover. Remove cover. Remove upper steering column cover. Remove 5 clips
from lower half of lower steering column cover. Remove cover.
3. Release wiring harness clip and unplug 4 harness connectors from back of combination switch. From below steering column, loosen
band clamp securing switch hub to steering column jacket. Pull switch assembly from steering column.
4. To install, slide combination switch assembly onto steering column. Make sure switch assembly is seated and level against end of
column jacket. To complete installation, reverse removal procedure.
FRONT WASHER MOTOR & RESERVOIR
Removal & Installation (Capri)
Drain reservoir if necessary. Remove 2 bolts securing reservoir to inner finder. Disconnect electrical connector from washer pump mo t o r.
NOTE:Disconnect linkage from wiper m otor arm ball socket NOT by rem oving nut and wiper m otor arm . This
will elim inate the need to retim e wiper m otor and linkage. Replacem ent m otors are supplied with arm
attached. Manufacturer does not give procedure for tim ing m otor arm to wiper park position.
Page 4 of 5 MITCHELL 1 ARTICLE - WIPER/WASHER SYSTEM 1991 ACCESSORIES & SAFETY EQUIPMENT Ford Motor Co. Wip
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Page 46 of 454

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ELECT RICAL COMPONENT LOCAT OR
1991-92 ELECT RICAL COMPONENT LOCAT ION Ford Motor Co. Electrical Com ponents
BUZZERS, RELAYS & TIMERS
BUZZERS, RELAYS & TIMERS LOCATION
CIRCUIT PROTECTION DEVICES
CIRCUIT PROTECTION DEVICES LOCATION
CONTROL UNITS
CONTROL UNITS LOCATION
SENDING UNITS & SENSORS
SENDING UNITS & SENSORS LOCATION
MOTORS
MOTORS LOCATION
ComponentLocation
A/C Clutch Relay (1991)On right front of engine bay, near power
steering pump.
A/C RelayOn left front corner of engine bay, left of
cooling fan. See Fig. 1
& Fig. 2
A/C Wide Open Throttle (WAC) RelayOn left front corner of engine bay, left of
cooling fan. See Fig. 1
& Fig. 2 .
Cooling Fan RelayOn left front fender panel, near
headlight. See Fig. 1
& Fig. 2 .
Condenser Fan RelayOn left front of engine bay, left of
cooling fan. See Fig. 1
& Fig. 2 .
Daytime Running Light (DRL) Relay (Canada) (1992)On left front corner of engine bay, near
headlight. See Fig. 1
.
Fuel Pump RelayBehind left side of dash, near ECA.
Headlight RelayBehind left headlight. See Fig. 1 .
Horn RelayUnder left side of dash. See Fig. 3 .
Main RelayIn left front corner of engine bay, near
battery.
P a r kin g Ligh t R e l a yOn right front corner of engine bay. See
Fig. 1
.
Turn Signal/Flasher RelayUnder left side of dash, behind ECA.
See Fig. 3
.
ComponentLocation
A/C In-Line FuseOn left side of heater case.
Condenser Fan In-Line FuseOn right side of steering column.
Fuse PanelBehind access panel, to left of steering column.
Fusible LinksOn left front strut tower. See Fig. 1 .
ComponentLocation
Electronic Control Assembly (ECA)Behind left side of dash, left of steering column.
Passive Restraint ModuleUnder driver's seat.
ComponentLocation
Airflow MeterOn right front corner of engine bay. See Fig. 1 .
Coolant Temperature Sending UnitBelow thermostat housing.
Crankshaft Position SensorInside distributor. See Fig. 1 .
EGR Temperature Sensor (1991)In exhaust manifold, near EGR valve.
Engine Coolant Temperature (ECT) SensorOn top of engine, near injector No. 1.
Fuel Gauge Sending Unit (1992)In fu el t an k.
Throttle Position Sensor (TPS)On left side of throttle body. See Fig. 1 .
ComponentLocation
Blower MotorUnder center of dash, behind
radio.
Windshield Washer Motors:
Front (1991)On right front fender panel,
bottom of washer reservoir.
Front (1992)On left front corner of engine
bay, in front of battery.
RearOn body panel, behind right
rear quarter panel.
Windshield Wiper Motor
Page 1 of 3 MITCHELL 1 ARTICLE - ELECTRICAL COMPONENT LOCATOR 1991-92 ELECTRICAL COMPONENT LOCATION For...
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Page 49 of 454

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FUSES & CIRCUIT BREAKERS
Fuses & Circuit Breakers 1988-93 Festiva
FUSES & FUSIBLE LINKS
FUSE PANEL & FUSIBLE LINK BLOCK LOCATIONS
The vehicle has a fuse block with fusible links and a fuse panel with circuit fuses. The fuse panel is located behind the instrument panel, left o
f
the steering column. The fuse block is located under the hood.
FUSE PANEL IDENTIFICATION
Fig. 1: Fuse Panel Identification
Courtesy of FORD MOTOR CO.
Fuse & Circuit Breaker Identification
1 - 15 Amp License Plate Light, Rear Side Marker Ligh t , Fr o n t P a r kin g Ligh t s, C l u st e r a n d Ta il Ligh t s
2 - 15 Amp Horn, Brakelights, High-Mount Brakelight
3 - 15 Amp (1988-89) Safety Belt Warning, Turn & Hazard Warning Flasher Lights, Radio, Trunk Light, Ignition Key Reminder Buzzer
3 - 15 Amp (1990-93) Safety Belt Warning, Turn & Hazard Warning Flasher Lights, Ignition Key Reminder Buzzer
4 - 15 Amp Audio System, Cigarette Lighter, Remote Control Mirror
5 - 15 Amp Rear Wiper/Washer, Daytime Running Light System (Canada)
6 - 15 Amp Heater & Air Conditioner
7 - 20 Amp Heater & Air Conditioner, Cooling Fan System
8 - 10 Amp (1988-89) Interior Courtesy Lights 10 Amp (1990-93) Radio, Interior Courtesy Lights, Luggage Compartment Light
9 - 15 Amp (1988-89) Front Wiper/Washer
9 - 15 Amp (1990-93) Front Wiper/Washer, Shift-Lock System (ATX), Engine Control System
10 - 10 Amp Charging System, Emission Control System
11 - 10 Amp (1988-90) Safety Belt Warning, Turn & Hazard Warning Flasher Lights, Back-Up Lights, Instrument Cluster, Warning
Lights,
11 - 10 Amp (1991-93) Safety Belt Warning, Turn & Hazard Warning Flasher Lights, Back-Up Lights, Instrument Cluster, Warning
Lights, Shift-Lock System
12 - 15 Amp Rear Window Defroster
13 - Not Used (1988-89) Spare
13 - 30 Amp (1990-93) Passive Restraint System (Automatic Seat Belt)
In-Line Fuse Identification
15 Amp (1990-93) Condenser Fan Motor (A/T Models Only)
10 Amp (1990-93) A/C System (located on left side of heater case)
FUSIBLE LINK BLOCK IDENTIFICATION
Page 1 of 3 MITCHELL 1 ARTICLE - FUSES & CIRCUIT BREAKERS Fuses & Circuit Breakers 1988-93 Festiva
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Page 50 of 454

Fig. 2: Underhood Fusible Link Block Identification
Courtesy of FORD MOTOR CO.
Fusible Link Identification
A - Brown (PTC) (1988-89 Carburetor) EFE Carburetor Heater
A - Brown (EGI) (1989-93 EFI) EFI System (1989-92), EGI-EFI System (1993)
B - Red (Main) Back-Up, Interior & Parking Lights, Brakelights, Taillights, Horn, Luggage Compartment Light, Turn Signal & Hazard
F l a sh e r Ligh t s, C l u st e r & Wa r n in g Ligh t s, R a d io , C iga r e t t e Ligh t e r , C h a r gin g & E missio n C o n t r o l S yst e ms, Wip e r / Wa sh e r S yst e ms,
A/C-Heater System, Cooling Fan System, Rear Window Defroster, Ignition & Starting Systems, Shift Lock System, Remote Control
Mirror, Ignition Key Reminder, Passive Restraint System (1990-93)
C - Brown (Head) Headlights, Daytime Running Lights, Starting & Charging System
BATTERY SPECIFICATIONS
All 1988-92 models use a BX-35 battery. The 1993 Festiva uses a 50D 20L standard battery.
CAUTIONS & WARNINGS
BATTERY WARNING
REPLACING BLOWN FUSES
Before replacing a blown fuse, remove ignition key, turn off all lights and accessories to avoid damaging the electrical system. Be sure to use
fuse with the correct indicated amperage rating. The use of an incorrect amperage rating fuse may result in a dangerous electrical system
overload.
BRAKE PAD WEAR INDICATOR
Indicator will cause a squealing or scraping noise, warning that brake pads need replacement.
CAUT ION: When battery is disconnected, vehicles equipped with com puters m ay lose m em ory data. When battery
power is restored, driveability problem s m ay exist on som e vehicles. T hese vehicles m ay require a
relearn procedure. See COMPUTER RELEARN PROCEDURES
article in the GENERAL INFORMAT ION
section.
WARNING:When battery is disconnected, vehicles equipped with com puters m ay lose m em ory data. When battery
power is restored, driveability problem s m ay exist on som e vehicles. T hese vehicles m ay require a
relearn procedure. See COMPUTER RELEARN PROCEDURES
article in GENERAL INFORMAT ION
section.
Page 2 of 3 MITCHELL 1 ARTICLE - FUSES & CIRCUIT BREAKERS Fuses & Circuit Breakers 1988-93 Festiva
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Page 58 of 454

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1991 System Wiring Diagram s
Ford - Festiva
COOLING FAN
Fig. 1: Cooling Fan Circuit
DEFOGGERS
Fig. 2: Defogger Circuit
HORN
Page 1 of 5 MITCHELL 1 ARTICLE - 1991 System Wiring Diagrams Ford - Festiva
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Page 59 of 454

Fig. 3: Horn Circuit
POWER MIRRORS
Fig. 4: Power Mirror Circuit
RADIO
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Page 67 of 454

Height SensorElectronic Suspension
HornsSteering Column Switches
Horn RelaySteering Column Switches
Idle Air Control (IAC) Motor/ValveEngine Performance
Ignition Coil(s)Engine Performance
Ignition Key Lock CylinderAnti-Theft System
Ignition ModuleEngine Performance
Ignition SwitchPower Distribution; Engine Performance; Generators &
Regulators; Starters
Illuminated Entry ModuleIllumination/Interior Lights
Illumination LightsIllumination/Interior Lights
Impact SensorAir Bag Restraint System
Inertia Fuel Shutoff SwitchEngine Performance
In h ib it Rel ayStarters
Instrument ClusterAnalog Instrument Panels
Intake Air Temperature (IAT) SensorEngine Performance
Interior LightsIllumination/Interior Lights
In t erl o ck Swit chStarters
Junction BlockPower Distribution
Keyless Entry ReceiverRemote Keyless Entry
Key Reminder SwitchStarters
Knock SensorEngine Performance
Lamp Control ModuleExterior Lights
License Plate LampExterior Lights
Lighting Control ModuleLighting Control Modules; Anti-Theft System; Daytime Running
Lights; Headlight Systems
Lower RelayPower Convertible Top
Malfunction Indicator Light (MIL)Engine Performance; Instrument Panels
Manifold Absolute Pressure (MAP) SensorEngine Performance
Mass Airflow (MAF) SensorEngine Performance
Mega FuseGenerators & Regulators
Memory Seat/Mirror ModuleMemory Systems
M ir r o r De fo gge rRear Window Defogger
Moon Roof MotorPower Moon Roof
Moon Roof RelayPower Moon Roof
Multi-Function Control ModuleWarning Systems
Neutral Safety SwitchStarters
Oil Level SwitchEngine Performance
Oil Pressure Switch/Sending UnitAnalog Instrument Panels; Engine Performance
Overhead ConsoleOverhead Console
Oxygen Sensor(s) (O2S)Engine Performance
Parking Brake SwitchAnalog Instrument Panels
Park LightsExterior Lights
Park/Neutral Position SwitchStarters; Engine Performance; Anti-Theft System; Body Control
Module
Perimeter Lighting Control RelayExterior Lights
Power AmplifierPower Antennas
Power Antenna ModulePower Antennas
Power Antenna MotorPower Antennas
Power Distribution CenterPower Distribution; Generators & Regulators; Starters
Power Door Lock MotorsPower Door Locks
Power Mirror MotorsPower Mirrors; Memory Systems
Power Sliding Door ControllerPower Sliding Side Door
Power Seat MotorsPower Seats; Memory Systems
Power Steering Pressure SwitchEngine Performance
Power Top MotorPower Convertible Top
Power Top Relay(s)Power Convertible Top
Powertrain Control ModuleEngine Performance; Analog Instrument Panels; Cruise Control
Systems; Data Link Connectors; Generators & Regulators; Starters
Power Window MotorsPower Windows
Power Window Relay(s)Power Windows
Radiator Fan Motor(s)Electric Cooling Fans
Radiator Fan Relay(s)Engine Performance; Electric Cooling Fans;
Rainsense ModuleWiper/Washer Systems
Raise RelayPower Convertible Top
Remote Anti-Theft Personality (RAP) ModuleAnti-Theft System; Starters; Warning Systems
Seat Belt PretensionersAir Bag Restraint System
Seat Belt Retractor SolenoidPassive Restraints
Seat Belt SwitchAir Bag Restraint System; Passive Restraints
Shift Interlock SolenoidShift Interlock Systems
Page 5 of 6 MITCHELL 1 ARTICLE - GENERAL INFORMATION Using Mitchell1's Wiring Diagrams
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Page 69 of 454

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WIRING DIAGRAMS
1991 WIRING DIAGRAMS Ford Motor Co.
IDENTIFICATION
COMPONENT LOCATION MENU
COMPONENT LOCATIONS
WIRING DIAGRAMS
ComponentFigure No. (Location)
A/C RELAY3 (B 8)
A/T SELECT LIGHT3 (E 8)
ALTERNATOR1 (C 3)
BACK-UP LIGHT SWITCH5 (D 19)
BATTERY1 (A 2)
BLOWER SWITCH3 (C 9)
BRAKE WARNING SWITCH1 (C 2)
CIG LTR4 (E 14)
CLUTCH INTERLOCK SWITCH (M/T)1 (B 2)
CONDENSER FAN (A/T)3 (C 8)
COOLANT FAN MOTOR1 (D 3)
COOLANT FAN RELAY1 (D 3)
DEFOG SWITCH5 (C 16)
DIR/HAZARD SWITCH4 (B-C 12)
ELECT CONTROL ASSY (ECA)2 (A 4-7)
FRONT WASHER MOTOR1 (E 3)
FRONT WIPER MOTOR1 (E 3)
FRONT WIPER/WASHER SWITCH5 (A 16)
FUEL PUMP INERTIA SWITCH2 (D 4)
FUEL PUMP RELAY2 (C 4)
FUSE BLOCK3 (D-E 9-10)
HEADLIGHT RELAY4 (D 14)
HORN RELAY3 (E 11)
HORN SWITCH4 (E 15)
IGNITION COIL2 (E 5)
IGNITION KEY REMINDER SWITCH4 (E 13)
IGNITION SWITCH3 (C-D 11)
INSTRUMENT CLUSTER4 (A-E 15)
INSTRUMENT PANEL LIGHT CONTROL4 (D-E 12)
INTERIOR LIGHT SWITCH4 (E 14)
LIGHT SWITCH4 (C-D 12)
MAIN FUSE PANEL1 (A 3)
MAIN RELAY2 (D 5)
NEUTRAL SAFETY SWITCH (A/T)1 (B 2)
PARKING LIGHT RELAY4 (C 14)
PASSIVE RESTRAINT CONTROL MODULE3 (A 11)
REAR WASHER MOTOR5 (D 17)
REAR WIPER/WASHER SWITCH5 (E 16)
SHIFT LOCK SERVO ASSY4 (A 12)
STARTER1 (B 3)
STOP LIGHT SWITCH5 (D 19)
TIMER/BUZZER UNIT4 (E 12)
TRUNK LIGHT5 (B 16)
WAC RELAY3 (B 8)
Page 1 of 6 MITCHELL 1 ARTICLE - WIRING DIAGRAMS 1991 WIRING DIAGRAMS Ford Motor Co.
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