Trailer Wiring Diagram - Wiring Diagrams For Trailers 6-Way trailer connectors are often used on gooseneck trailers, but can be used for other types such as utility, boat trailers and 5th wheels. 6 way connectors include the basic connection of running lights, brake lights, turn signals and a ground wire. They also have one wire for trailer brakes and one wire for a battery connection. How to Wire a 6 Pole Round Trailer End Plug | etrailer How to Wire a 6 Pole Round Trailer End Plug Product There is a suggested and common method for 6 function trailer wiring. You will have the following functions: Right Turn, Left Turn, Ground, Tail/marker, Brake, Battery. I have included a help article on trailer wiring that includes a diagram and wiring matrix that explains wire color How to Make Make Pigtail Electrical Wire Connections Pigtail connections are very handy if there is more than one wire to be connected to a device such as an outlet receptacle or light fixture. Making electrical connections to a device in an electrical box is easy if there is only one cable in the box—you simply attach each circuit wire to a screw terminal on the device. Wiring diagram for 6 wire obd connector - Fixya It's not the familiar looking OBD-II 16 pin connector but is the Ford style two part connector consisting of one single wire with a female spade type connector and another odd shaped connector with 5 or 6 female spade connectors in it.