1997 FORD F150 headlamp

theSeating and safety restraints
chapter.
2. Make sure the headlamps and
vehicle accessories are off.
If starting a vehicle with an
automatic transmission:
²Make sure the parking brake is
set.
²Make sure the gearshift is in P
(Park).
P
Starting
85

Instrument panel fuses
Always replace a fuse with
one that has the specified
amperage rating. Using a fuse
with a higher amperage rating
can cause severe wire damage
and could start a fire.
Position Amps Description
1 15 Stop/turn lamps and turn indicators
2 5 Instrument cluster
3 25 Cigarette lighter
4 5 Power mirrors, autolamp, remote
anti-theft/keyless entry, headlamp relay and
parking lamp relay
5 15 Speed control, daytime running lamps, climate
control blend door, backup lamps, A/C clutch
coil
6 5 Brake-shift interlock, generic electronic module
(GEM)/central timer module (CTM) and air
suspension module
7 - Not used
8 5 Radio, remote anti-theft/keyless entry, GEM
module/CTM module
1
1
2
3
4
512 22
21323
31424
4
16 15
25
526
61727
71828
81929
11 21 31930
10 20
f12_pass_comp_fuses
Roadside emergencies
137

Position Amps Description
9 - Not used
10 - Not used
11 30 Wiper system
12 5 On-board diagnostic (OBD II) data link
connector
13 15 Brake ON/OFF switch, rear anti-lock brake
module and brake pressure switch
14 15 Interior lamps and accessory delay relay
15 5 GEM module/CTM module
16 20 High beam headlamps
17 - Not used
18 5 Instrument illumination
19 10 Air bag diagnostic monitor, instrument cluster
20 5 GEM module/CTM module and powertrain
control module (PCM)
21 15 Starter relay
22 10 Air bag diagnostic monitor and passenger air
bag deactivate switch
23 10 4WD clutch relay, electronic flasher, 4WD/2WD
vacuum solenoids and trailer tow battery charge
relay
24 10 I/P blower relay
25 5 4WABS module and relay
26 10 Right low beam headlamp and DRL module
27 5 Foglamp relay
28 10 Left low beam headlamp
29 5 Autolamp, instrument cluster, transmission
control indicator lamp and switch
30 30 Ignition coils and PCM relay
31 - Not used
Roadside emergencies
138

Fuses
Position Amps Description
7 15 Parking and tail lamps
8 30 Headlamps
9 15 Daytime running lamps and fog lamps
10 25 Auxiliary power point
11 - Not used
12 - Not used
13 - Not used
14 60/20 4WABS/rear anti-lock brake
15 50 Air suspension compressor
16 40 Trailer tow battery charge and stop/turn lamps
17 30 4WD transfer case shift motor and clutch
18 30 Driver power seat
19 20 Fuel pump
20 50 Instrument panel fuse panel ignition switch feed
21 50 Instrument panel fuse panel ignition switch feed
22 50 I/P fuse panel battery feed
23 40 I/P blower
24 30 PCM power
25 30 Power windows
26 - Not used
27 - Not used
28 30 Trailer tow electronic brake
29 - Not used
Diodes
Position Description
1 Rear ABS diode
2 PCM diode
Roadside emergencies
140

REPLACING BULBS
Replacing exterior bulbs
It is a good idea to check the
operation of the following lamps
frequently:
²Headlamps
²Tail lamps
²Brakelamps
²High-mount brakelamp
²Backup lamps
²Hazard flashers
²Turn signals
²License plate lamp
²Fog lamps
²Interior overhead lampsf12_replacing_bulbs
Maintenance and care
198

Do not remove lamp bulbs unless
they will be replaced immediately.
If a bulb is removed for an
extended period of time,
contaminants may enter the lamp
and affect performance.
Replacing headlamp bulbs
Handle a halogen
headlamp bulb carefully
and keep out of children's reach.
Grasp the bulb only by its plastic
base and do not touch the glass.
The oil from your hand could
cause the bulb to break the next
time the headlamps are
operated.
1. Make sure that the headlamp
control is in the position.
2. Open the hood.
3. At the back of the headlamp,
pull clips rearward and up 19 mm
(about 3/4 in.) to release the
headlamp assembly.
f12_headlamps_turnsignals
Maintenance and care
199

4. Slide headlamp assembly
forward and off of guide ribs to
expose the back of the bulb and
wiring connector.
5. Remove the electrical connector
from the bulb by grasping the wire
and pulling it rearward.
6. Remove bulb retainer ring by
turning it counterclockwise about
1/4 turn, then slide the ring off the
plastic base.
7. Without turning, carefully pull
bulb assembly out of headlamp
assembly.
8. Insert the glass end of the new
bulb into the headlamp assembly
socket. When the grooves in the
plastic base are aligned, push the
bulb into the socket until the
plastic base contacts the rear of
the socket.
9. Slip bulb retaining ring over the
plastic base and lock the ring into
the socket by turning it clockwise
until you feel a ªstop.º
10. Push the electrical connector
into the rear of the plastic base
until it ªsnaps.º
Maintenance and care
200

11. Straighten alignment pins,
making them parallel with the
outer edges of the attachment
standoff.
12. Carefully insert the headlamp
assembly into the vehicle making
sure the alignment pins are
inserted into the proper holes and
into the guide ribs.
13. Hold the headlamp assembly
snugly against the vehicle and
push down on the clips to lock the
lamp into position.
Replacing parking lamp/turn
signal bulbs
1. Remove screw from the top of
lamp assembly.
Maintenance and care
201