Did you know the most common trailer plugs are 4 way, 5 way, 6 way and 7 way? This wiring information chart will show you how to determine each plug style and what it is used for. The colour the column is highlighted in, is the colour of the plug.

Not sure which is the correct plug style for your trailer? Choose a connector that has the required number of pins for the functions required for your trailer.

4-Way Connectors: 4-Way connectors allow the basic hookup of the three lighting functions (running lights, turn signals, and brake lights) and one pin is provided for the ground wire. 

5-Way Connectors: 5-Way connectors allow the basic hookup of the three lighting functions (running lights, turn signals, and brake lights) a pin for Ground, and also one additional pin is available to provide support for surge brakes or hydraulic brakes. The additional wire is tapped into the backup lights to disengage the hydraulic trailer coupler (actuator) when the vehicle is reversing, turning off the trailer's brakes

6-Way Connectors: 6-Way connectors allow the basic hookup of the three lighting functions (running lights, turn signals, and brake lights) The ground and two extra pins provide two additional functions, typically for electric brakes and 12 volt "hot" lead.

7-Way Connectors: 7-Way connectors allow hookup for running lights, turn signals, brake lights, and additional pins for electric brakes, 12 volt "hot" lead and backup lights.

 - hitchweb Team