4 Pin To 7 Pin Trailer Wiring Diagram. If you have a 13 pin socket fitted to your vehicle adaptors to plug in so you can use a normal 7 pin plug are available. Brown pin for unwanted markers tail lamps and running lights.
Other wiring diagrams on this site. Your owners manual should have another diagram to help you. Ground for all trailer electrical functions.
The 7 pin flat plug will fit into a 12 pin flat socket and work perfectly.
Wiring diagram consists of several comprehensive illustrations that present the connection of varied things. Here is the diagram for 7 pin connector. In the trailer wiring diagram and connector application chart below use the first 5 pins and ignore the rest. 7 pin to 4 pin trailer wiring diagramthe 5 pin has a design and pin layout that is identical to the 7 pin iso 1724 connector with the exception for the lack of pin 1 l and pin 4 r.