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Relay Center
The relay center is located along the passenger side A-pillar on the right
side of the footwell.
Relay
LocationRelay Description
R1 Spring applied hydraulic release warning chime module or
PCM power VPWR 2, 3 and 4
R2 A/C compressor clutch
R3 Power windows
R4 Flasher (standard/LED)
R5 Upfitter relay 1
R6 Upfitter relay 2
R7 Headlights
R8 Spare
R9 Upfitter relay 3
R10 Starter
R11 DCU (diesel engine only)
R12 Two–speed axle/Differential lock
R13 Door lock
R14 Air tank moisture valve
R15 DRL #1
R16 Heated mirrors
R17 Spare
R18 Upfitter relay 4
R1
R9 R10 R11 R12 R13 R14 R15 R16 R17
R18 R19 R20 R21 R22 R23 R24 R25 R26
R2 R3 R4 R5 R6 R7 R8
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Relay
LocationRelay Description
R19 Shift interlock/EPRNDL display
R20 Selective Catalyst Reduction (SCR) system (NOx) (diesel
engine only)
R21 Run
R22 Door unlock
R23 ABS warning indicator
R24 DRL #2
R25 Park lights
R26 Spare
Trailer Tow Relays (If Equipped)
Fuse/Relay
LocationFuse Amp
RatingProtected Circuits
1 30A* Trailer tow ABS feed (non electric trailer
brake vehicles only)
2 30A* Trailer tow park/marker lamps
3 30A* Trailer tow stop lamps
TRAILER
ABS
TRAILER
STOP
LAMPTRAILER
MARKER
LAMP
TRAILER
TA I L
LAMPNOT
USEDNOT
USED
LH
TURNRH
TURN30A
30A
30A
30A
NOT USED
5 4 32 1 R1R2R5
R6
R3R4R7
R8
202Fuses
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USA(fus)
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WARNING:The use of inferior parts can adversely affect the
quality and reliability of your vehicle which, in turn, can result in
property damage, personal injury or death.
To avoid damage to the vehicle’s electrical components prior to electric
welding:
•disconnect both battery cables.
•attach the welder ground cable as close as possible to the part being
welded.
•it is recommended that the component be temporarily removed if
welding close to an electrical component.
Follow the checks and services in theScheduled Maintenancechapter.
Have your dealer or service center inspect your vehicle at least once a
year. Remember that regular maintenance and inspections usually
prevent serious problems from developing later.
If the owner or operator of the vehicle is a skilled technician and intends
on performing the vehicle maintenance and service, he is strongly urged
to purchase a service manual.
Electrical System
Periodically inspect electrical connectors on the outside of the cab and
on the engine and frame for corrosion and tightness. Exposed terminals,
such as the fuel sender, cranking motor, alternator and feed-through
studs, should be cleaned and re-coated with a lubricant sealing grease
such as Motorcraft® Silicone Brake Caliper Grease and Dielectic
Compound XG-3, or equivalent. This should include the ground cable
connector for batteries, engine and cab as well as the jump starting stud.
Accessory Feed Connections
Vehicle electrical systems are complex and often include powertrain
components, such as engine and transmission controls, instrument
panels, ABS, etc. While most systems operate on battery voltage
(12 volts), some systems can be as high as 90 volts or as low as five
volts. See theElectrical Circuit Diagram Manuals,available from your
vehicle’s manufacturer, to make sure that any additional body lights and
accessories are connected to circuits that are both appropriate and not
overloaded. No modification should be made to any vehicle control
system without first contacting your dealer.
Maintenance205
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Replacing Brake/Tail/Rear Turn Signal/Reverse/License Plate Lamp
Bulbs
1. Remove the four screws and the
lamp lens from the lamp
assembly.
2. Carefully pull the bulb straight
out of the socket.
3. Reverse the procedure to install
the new bulb.
BULB SPECIFICATION CHART
Replacement bulbs are specified in the chart below. Headlamp bulbs
must be marked with an authorized D.O.T. for North America and an E
for Europe to make sure lamp performance, light brightness and pattern
and safe visibility. The correct bulbs will not damage the lamp assembly
or void the lamp assembly warranty and will provide quality bulb
illumination time.
Function Number of
BulbsTrade Number
Headlamps 2 H6054
Front turn signal lamps 2 1157
Front sidemarker lamps, parking
lamps2 (amber) 194
Brake lamps, tail lamps, stop lamps,
rear turn signals lamps, license plate
lamps1 (each side) 1157
Back up lamps 2 1156
Front clearance and identification
lamps5 194
Dome lamp 1 105
To replace all instrument panel lights, see your authorized dealer.
Maintenance241
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Exhaust fumes ..........................104
F
Fail safe cooling ........................222
Fan, Engine Cooling .................219
Filter
fuel ...........................................232
Fuel
cap ...........................................118
capacity ...................................277
filler funnel .............................116
filling your vehicle with fuel ..118
octane rating ...................116, 263
quality ......................................114
running out of fuel .................116
safety information relating to
automotive fuels .....................113
Fuses ..........................194–195, 203
G
Gas cap (see Fuel cap) ............118
Gauges ...................................64, 66
H
Hazard flashers .........................185
Headlamps ...................................56
aiming ......................................239
bulb specifications ..................241
daytime running lights .............57
flash to pass ..............................56
replacing bulbs .......................239
turning on and off ....................56
Head restraints ...........................92
Heating ........................................88
Hood ..........................................215I
Ignition ...............................103, 263
Information displays ...................74
Instrument panel
cleaning ...................................247
cluster ........................................68
lighting up panel and
interior .......................................57
J
Joining two calls
(multiparty/conference call) ....328
Jump-starting your vehicle ......185
K
Keys
positions of the ignition .........103
L
Lamps ..........................................56
bulb replacement
specifications chart ................241
daytime running light ...............57
headlamps .................................56
headlamps, flash to pass ..........56
instrument panel, dimming .....57
interior lamps .....................58–59
replacing bulbs .......................239
Lane change indicator
(see Turn signal) ........................58
LATCH anchors ...........................36
Lights, warning and indicator ....68
Load limits .................................174
Locks
childproof ..................................40
doors ..........................................53
374Index
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Ventilating your vehicle ...........104
Voice commands in media
mode ..........................................348
Voice commands in phone
mode ..........................................325
W
Warning lights (see Lights) .......68
Washer fluid ..............................232Water, Driving through .............183
Wheels .......................................258
Windows
power .........................................59
Windshield washer fluid and
wipers ..........................................55
checking and adding fluid .....232
replacing wiper blades ...........236
Wrecker towing .........................179
Index377
2013 F-650/750(f67)
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USA(fus)