Page 144 of 280
Fuse/RelayLocation Fuse Amp
Rating Fuse Description
Relay 2 — Not used
Relay 3 — Horn
Relay 4 — One-touch down window
Relay 5 — Not used
Power distribution box
Always disconnect the battery before servicing high current
fuses.
Fuse/Relay Location Fuse Amp
Rating Fuse Description
1 15A* Park lamps, Roof lamps
2 30A* Power seat (driver)
3 30A* Power seat (passenger)
4 15A* Washer pump
5 - Not used
6 15A* Air intake heater (Caterpillar engine only)
7 15A* Stoplamps (Air brake vehicles only)
2007 F-650/750 (f67)
Supplement
USA (fus)
Roadside Emergencies
144
Page 145 of 280

Fuse/Relay
LocationFuse Amp
RatingFuse Description
8 25A* Fuel heater (Caterpillar engine only)
20A* Fuel heater (6.0L Power Stroke engine only)
9 20A* Crank inhibit relay, Engine ECM, Cluster,
Transmission TCM, CJB Start, CJB Run
10 15A* Heated drain valve
11 30A* Electric trailer brake
12 20A* Daytime Running Lamps (DRL), Blend door
actuator, Climate mode, Back-up, Heated
seats, Trailer ABS, Exhaust brake
13 — Not used
14 — Not used
15 7.5A* Body builder prep/trailer socket stop (6.0L
Power Stroke engine only)
16 5A* ABS Run feed
17 — Not used
18 10A* Fuel transfer pump (duel fuel tanks only)
19 — Not used
20 10A* Engine ECM power relay (6.0L Power Stroke
engine only)
21 10A* Hydromax motor input to GEM
22 10A* Engine IDM2 logic power (6.0L Power Stroke
engine only)
23 — Not used
24 — Not used
101 30A** Bendix Air ABS relay (Air brake vehicles
only)
WABCO ABS modulator relay (Hydraulic
brake vehicles only)
102 20A** Body builder prep Run feed
103 20A** Ignition switch (Junction box fuses 8, 9, 10,
11, 19, 29, 30)
104 20A** Power point
2007 F-650/750(f67)
Supplement
USA(fus)
Roadside Emergencies
145
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Fuse/Relay
LocationFuse Amp
RatingFuse Description
105 20A** Power door locks
106 30A** Headlamps
107 50A** Junction box battery feed (1, 2, 3, 4, 12, 13,
14, 15)
108 40A** Fuel heater (Cummins engine only)
109 40A** Power windows
110 30A** Wiper power relay (Park, Low/High speed)
111 30A** Body builder prep - park lamps
112 40A** Blower motor
113 30A** Heated seats
114 25A** WABCO ABS battery feed (Hydraulic brake
vehicles only)
115 20A** Ignition switch, Central Junction Box fuses 8,
9, 10, 11, Starter motor relay
116 30A** Body builder prep - left/right turn relays,
Back-up lamps
117 20A** Body builder prep/trailer socket stop
(Caterpillar and Cummins engines only)
118 60A** Hydraulic brake trailer tow fuse block
119/120 60A** Hydraulic brake trailer tow fuse block
Air brake trailer tow fuse block
121/122 60A** HydroMax motor
Air brake trailer tow fuse block
201 — Washer pump relay
202 — Wiper speed relay
203 — Wiper run/park relay
204 — Wiper power relay
205 — RH stop/turn relay
206 — LH stop/turn relay
207 — Hydraulic ABS event relay
208 — Back-up lamps relay
2007 F-650/750(f67)
Supplement
USA(fus)
Roadside Emergencies
146
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Make sure the battery cover/shield is reinstalled after the battery
has been cleaned or replaced.
For longer, trouble-free operation, keep the top of the batteries clean
and dry. Also, make certain the battery cables are always tightly fastened
to the battery terminals.
If you see any corrosion on the battery or terminals, remove the cables
from the terminals and clean with a wire brush. You can neutralize the
acid with a solution of baking soda and water.
It is recommended that the negative battery cable terminal be
disconnected from the battery if you plan to store your vehicle for an
extended period of time. This will minimize the discharge of your battery
during storage.
If the engine cranks but does not start, remove the battery box cover
and check the 40A inline fuse located on the battery cable above the
battery.
Batteries normally produce explosive gases which can cause
personal injury. Therefore, do not allow flames, sparks or lighted
substances to come near the battery. When working near the battery,
always shield your face and protect your eyes. Always provide proper
ventilation.
When lifting a plastic-cased battery, excessive pressure on the
end walls could cause acid to flow through the vent caps,
resulting in personal injury and/or damage to the vehicle or battery.
Lift the battery with a battery carrier or with your hands on opposite
corners.
Keep batteries out of reach of children. Batteries contain sulfuric
acid. Avoid contact with skin, eyes or clothing. Shield your eyes
when working near the battery to protect against possible splashing of
acid solution. In case of acid contact with skin or eyes, flush
immediately with water for a minimum of 15 minutes and get prompt
medical attention. If acid is swallowed, call a physician immediately.
Battery posts, terminals and related accessories contain lead and
lead compounds.Wash hands after handling.
2007 F-650/750(f67)
Supplement
USA(fus)
Maintenance and Specifications
180