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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
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