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. A trailer is an unpowered vehicle and is supposed to be towed by another vehicle: SUVs, pickup trucks, or jeeps commonly tow trailers.

7 pin trailer plug wire