Honda PASSPORT 2023 Owner's Manual page 389

uuTowing a TraileruTowing Preparation
Electric Brake
(Brown)
+B (20A)
(Blue)
Ground
(Black)
Brake Lights
(Sky Blue)
388
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. 576