Wiring guides note: identify the wires on your vehicle and trailer by function only color coding is not standard among all manufacturers *refer to product instructions and locate wires on vehicle by function only not all vehicles are listed obove recommended use with 47295 and 47285. Hopkins trailer plug wiring diagram. Hopkins 7 pin trailer wiring diagram - collections of wiring diagram for hopkins trailer plug inspirational hopkins 7 pin wiring diagram for hopkins trailer plug 2017 trailer plug wiring hopkins trailer plug wiring diagram sample wiring diagram for hopkins trailer plug 2018 wiring diagram for a.