*7-Pin Trailer Wiring Diagram with a Round Prong These different 7-pin trailer wiring diagrams are as follows. The 7-pin trailer diagram has three different variations depending on the type of connector in which the wiring configuration is also different. This connector provides additional electrical support for a 12-volt battery via the black wire and electrical breaks via the blue wire. It is used for brake control (mainly electric brakes) and are commonly used on campers, gooseneck trailers, and horse trailers. The 6-way connector helps establish a connection between the primary vehicle and the trailer. The black wire is an indicator for the +12v battery attached to the trailer-the other wires are in the same fashion as the previous trailer diagrams. The blue wire responsible for the hydraulic brakes is now used for electric brakes. In this 6-pin trailer wiring diagram, as it can be observed, there are two new wire positionings. So this wire also serves as the reverse light. The extra wire is connected with the backup lights that help disengage the hydraulic coupler of the trailer when the vehicle starts to reverse this turns off the brakes of the trailer. One pin is used for grounding the other commonly used are for indicating turns, breaks, and that the car is running. It is usually used by vehicles that use hydraulic or surge brakes. These are connected via the 5-Way connector.Ī 5-way connector is used to establish an electrical connection between the trailer and the primary vehicle.

The last set of wires (yellow) leads to the left side to indicate the left signal. The fourth wire (blue) is the one that indicates when the brakes are applied. These are also connected to the side to ensure increased visibility. The third (brown) wire is the one that is responsible for the taillights. The second wire (green) to originate from the connector is responsible for the right signal. In this 5-pin trailer wiring diagram above, you can see that the first wire is the ground wire (white). Usually, light-duty trailers use this connector. The fourth wire (White), as shown in the diagram, is the ground wire. The 4-Way connector allows you to control the three essential light functions: the break, right turn, and left turn. They are all connected by a 4-way connector.Ĥ-Way connectors are the most basic connectors used for hooking up your trailer with the primary vehicle. The brown wire, which is responsible for handling the taillights, leads to both the light bulbs at the back, and the yellow wire runs back to the left to indicate a left turn. The green runs at the back to connect with the right turn. Trailer Wiring Diagram Īs you can observe from this 4-pin trailer wiring diagram, the white wire is connected to the ground. The different types of trailers are as follows: They are used for transporting goods, materials, boats, camping utilities, etc. The trailer has several applications depending on the user and what kind of services one might be looking for.

The minimum output connector is the 4-Way connector, providing electrical output to the trailer's signals and ground and tail lights. To make the trailer’s electric output work, we use different connectors to ensure that depending on the outputs we require. The trailer is attached to the primary vehicle by the appropriate hitch. They can also be recreational vehicles depending on their type.Ī trailer is a separate extension vehicle that needs to be linked with the primary vehicle. To purchase components for trailer wiring please visit – trailer is an unpowered vehicle and is supposed to be towed by another vehicle: SUVs, pickup trucks, or jeeps commonly tow trailers. Other wiring diagrams on this site are listed below:ħ pin ‘S’ type plug and socket wiring diagram.ħ way universal bypass relay wiring diagram. The second diagram shows two brake lights, two indicators, two side lights and a fog light.

The first diagram is a simple set up of two brake lights, two indicators and two side lights. Here are two wiring diagrams for the 7 pin ‘N’ type trailer electrical plug. This has now been replaced by 13 pin Euro plugs on all new caravans.īelow is a diagram for the original plug and socket showing the functions of each pin. This supplies power to the road lighting of your trailer or caravan. The 7 pin N type plug and socket is still the most common connector for towing.

Pinout 7 pin trailer connector