2011 FORD F750 horn

Fuse/Relay
locationFuse amp
ratingFuse description
1 20A Horn
2 15A Flasher relay
3 20A Power point
4 10A Data Link Connector (DLC), Engine
diagnostic connector, Parking brake warning
5 15A Run relay
6 — Not used
7 — Not used
8 5A Radio, GEM
9 5A Power window relay
10 15A Heated mirrors
11 5A Wiper and washer systems
12 10A Transmission shift selector
13 20A Radio, Power mirrors
14 10A Interior lamp relay
15 10A Interior lamp relay
16 15A High beams, Indicator
17 — Not used
18 5A Dimmer switch, Interior lighting
19 15A Engine control
20 5A Starting system
21 10A DRL resistor
22 15A Air horn, Air suspension dump, Two-speed
axle, Driver-controlled locking differential
23 10A Flasher relay
24 15A ABS relay, Fuel heater relay, Air dryer
25 10A Blower motor relay
26 10A Right-hand low beam headlight
27 — Not used
28 10A Left-hand low beam headlight
29 10A Cluster, GEM
Roadside Emergencies
155
2011 F-650/750(f67)
Supplement, 2nd Printing
USA(fus)

Fuse/Relay
locationFuse amp
ratingFuse description
30 15A Allison electronic transmission
31 15A Mirror fold relay
Relay 1 — Interior lamps
Relay 2 — Not used
Relay 3 — Horn
Relay 4 — Not used
Relay 5 — Not used
Power distribution box
WARNING:Always disconnect the battery before servicing high
current fuses.
WARNING:To reduce risk of electrical shock, always replace
the cover to the Power Distribution Box before reconnecting the
battery or refilling fluid reservoirs.
Roadside Emergencies
156
2011 F-650/750(f67)
Supplement, 2nd Printing
USA(fus)

Daily owner checks
U.S. Department
of Transportation,
Federal Highway
Administration
requirements
(ensure that the
entire system is
functioning
properly)Service brakes
Parking brake
Steering mechanism
Lighting devices and reflectors
Tires
Horn
Windshield wipers
Rear vision mirrors
Wheels and rims
Emergency equipment
Every oil change
EngineInspect engine cooling system hoses, clamps and
protection.*
Inspect drive belts.
Exhaust systemInspect entire exhaust system (including the
inlet pipe(s), muffler(s), outlet pipe(s), clamps
and fasteners) for holes, leakage, breakage,
corrosive damage and separation from other
components. Adjust, service or replace with the
same or the equivalent part. (Also a noise
emission control service.)
SuspensionTighten the front and rear spring U-bolts to the
specified torque.
Driveline and rear
axleLubricate the U-joints and the slip yoke.
Scheduled Maintenance Guide
256
2011 F-650/750(f67)
Supplement, 2nd Printing
USA(fus)