Roadside emergencies – FORD 2008 F-550 v.2 User Manual
Page 274
If the battery has been disconnected and reconnected, refer to the
Battery section of the Maintenance and Specifications chapter.
The high-current fuses are coded as follows:
Fuse/Relay
Location
Fuse Amp
Rating
Power Distribution Box Description
1
Relay
Blower motor/Variable blower control
(Dual Zone Climate Control)
2
Relay
Electronic Shift-on-the-Fly (ESOF) Lo-Hi
3
Relay
Heater mirror
4
—
Not used
5
30A*
Trailer Brake Controller (TBC)
6
40A*
ABS module (Pump)
7
30A*
Upfitter auxiliary switch #1
8
30A*
Upfitter auxiliary switch #2
9
40A*
ABS module (Coil)
10
20A*
Cigar lighter
11
20A*
Instrument panel power point
12
15A**
Brake On/Off (BOO) relay feed
13
5A **
Brake switch, Brake switch relay coil, SJB
module, 4x4 module
14
—
Not used
15
—
Not used
16
Relay
A/C clutch
2008 F-250/350/450/550 (f23)
Owners Guide (post-2002-fmt)
USA (fus)
Roadside Emergencies
274