Honda PASSPORT 2022 Owner's Manual page 388

uuTowing a TraileruTowing Preparation
Electric Brake
(Brown)
+B (20A)
(Blue)
Ground
(Black)
Brake Lights
(Sky Blue)
386
The trailer hitch harness is used to install the
controller for the electric trailer brakes.
Insert the trailer brake fuse into the engine
compartment sub fuse box.
2 Engine Compartment Fuse Box Type B
P. 573