15 7 Pin Trailer Connector Wiring Diagrams. Without a factory wiring diagram, i don't know where else to look. Trailer wiring diagrams showing you the typical wiring for most single axle trailer and tandem axle trailers.
As mentioned above, there are a number of connectors; Various styles of connectors are available with four to seven pins to allow transfer of power for the trailer wiring diagrams listed below, should help identify any wiring issues you may have with your trailer. 5 way trailer wiring diagram allows basic hookup of the trailer and allows using 3 main lighting functions and 1 extra function that depends on the vehicle
This is the style we recommend.
15 7 Pin Trailer Connector Wiring Diagrams. My vehicle has a 4 pin i don't know if your existing wiring will facilitate the 7 pin connector. Did they wire the 7 pin to power the backup lights to the trailer instead of aux power on the center pin? 4 pin trailer wiring diagram. A number of iso standards cover trailer connectors, the electrical connectors between vehicles and the trailers they tow that provide a means of control for the trailers.