Electrical system includes harness with 4 pin connection point for plugging in a brake controller wiring adapter sold separately supplies required fuses wire taps and additional hardware. For trailers that have a little more going on electrically we recommend 7 pin connectors.

7 Way Plug Information R And P Carriages Cargo Utility
7 pin trailer wiring kit with brakes. The 2 added pins are for auxiliary power and back up lights. 6 pin trailer wiring introduces two new functions a wire for connecting trailer brakes and a wire for 12 volt auxiliary power. 7 way trailer wiring diagram is explained in details in the picture and the table below. Install a 7 way rv style trailer connector on your vehicle with this easy to splice harnessmodulite draws power directly from the battery to avoid overloading your vehicles circuits. The brake controller installation kit or etbc7 includes everything necessary for converting your 4 way connector to a 7 way connector in order to use a brake controller to activate the electric brakes on your trailer. Back up lights 7 pin connector.
Whether you need trailer light wiring or wiring for any other towing application we have what you need and we make finding the right fit easy. The trailer wiring 7 way upgrade kit e99011 that you referenced will cover all of the wiring from the trailer 7 way connector to a junction box for you to install on the trailer frame. If you do not have a 4 way connector on your vehicle you will need to install one first. Trailer wiring diagrams trailer wiring connectors. Large 5th wheel trailers. Various connectors are available from four to seven pins that allow for the transfer of power for the lighting as well as auxiliary functions such as an electric trailer brake controller backup lights or a 12v power supply for a winch or interior trailer lights.
Kit allows you to upgrade from a 4 way 5 way or 6 way connector to a 7 way connector pre wired 7 way blade style trailer end connector lets you connect your trailer to your vehicle. 6 way wiring is most common on gooseneck trailers and allows for use with a brake controller. This kit includes a junction box so you can quickly and easily connect the wires from the included trailer connector to your trailers wiring. 7 pin trailer wiring diagram with brakes. Beyond that it would be a matter of running wires from the junction box to each of the functions you have on the trailer such as lights and brakes. On most recreational vehicles.
If you have a 7 way connector on your trailer you will need the brake controller 7. 6 pin connectors also exist but they are less common. 7 way trailer connectors are used by the following vehicle types. Simply enter your vehicles year make model and engine at the top of this page. Use this 7 pin trailer wiring diagram to properly wire your 7 pin trailer plug. Expanded use trailer with brakes aux power amp.
If you need to connect two different wiring systems check out our selection of connectors and converters.