FORD 1999 F-550 v.1 - Manual (Page 155)

The high-current fuses and relays are coded as follows.
Fuse/Relay
Location
Fuse Amp
Rating
Description
1 7.5A * Trailer Tow Left Stop/Turn Lamp
2 10A* Air Bag Module
3 7.5A* Trailer Tow Right Stop/Turn Lamp
4 20A* Trailer Tow Backup Lamps, Trailer
Tow Park Lamps
5 20A*
(Gasoline only)
5A*
(Diesel only)
Gasoline only-PCM, Two Speed Fuel
Pump Relay Coil, Fuel Pump Relay
Coil, Mass Air Flow Sensor, Fuel
Injectors
Diesel only-Dual Alternator
ЉAЉ Field
19
29
18
28
30 31 32 33 34 35
37
36
17
27
16
26
15
25
14
24
13
11
12
91
0
78 56 34 12
23 22 21 20
Roadside emergencies
155