Ford F-Series Super Duty Class A 2019 Owner's Manual page 81

Fuse or Relay
Number
J14
J15
J16
J17
J18
J19
J20
J21
J22
R1
R2
R3
R4
R5
R6
R7
R8
R9
R10
R11
Motorhome (TY3) Canada/United States of America, enUSA, Edition date: 201803, Third-Printing-
Fuses
Fuse Rating
(Power distribution box fuse #F19, F22,
F21).
— Not used.
Instrument panel battery feed (fuse #F3,
2
60A
F5).
Lighting primary fuse.
Horn.
2
20A
Ignition switch feed (instrument panel
2
40A
fuses F20, F22, F24, F26, F18).
Brake on/off switch.
2
20A
Multifunction switch.
— Not used.
— Not used.
— Not used.
Reverse lamp relay coil.
2
20A
A/C clutch relay coil.
A/C demand switch.
— Horn relay.
— Fuel pump relay.
— Starter relay.
— Backup lamps relay.
— Brake on/off signal isolating relay
(Hydromax).
— Trailer tow parking lamps relay.
— Not used.
— A/C clutch relay.
— Not used.
— Starter relay.
— Blower motor relay.
78
Protected Component