Ford F-Series Super Duty Class A 2019 Owner's Manual page 86

Diode and Relay Module
E224614
Relay Number
1
2
3
4
5
6
7
8
Fuse Holder Module
The fuse holder is next to the diode and
relay module.
Motorhome (TY3) Canada/United States of America, enUSA, Edition date: 201803, Third-Printing-
Fuses
Not used.
Not used.
Not used.
Daytime running lamps power relay.
HydroMax – brake on/off signal isolating relay.
Reverse lamps relay.
Starter ground relay.
Trailer tow parking lamps relay.
Locate the module box with the power
distribution box in from of the radiator.
Protected Component
83