Standard 7 Pin Trailer Plug Wiring Diagram

Trailer wiring diagrams trailer wiring connectors.

Standard 7 pin trailer plug wiring diagram. Click on the image below to enlarge it. 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. Each component ought to be set and connected with different parts in particular manner. 7 way plug wiring diagram standard wiring post purpose wire color tm park light green battery feed black rt right turn brake light brown lt left turn brake light red s trailer electric brakes blue gd ground white a accessory yellow this is the most common standard wiring scheme for rv plugs and the one used by major auto manufacturers today.

The first diagram is a simple set up of two brake lights two indicators and two side lights. If not the arrangement will not function as it ought to be. If your truck has a built in 7 pin socket but you only need 5 of the pins. Here are two wiring diagrams for the 7 pin n type trailer electrical plug.

Use the 7 pin connector anyway see below and just leave out the last 2 wires. 7 pin heavy duty trailer wiring diagram manufactured in accordance with the saej560 standard and in accordance with the australian standard as4735 2003 as required for vehicles and trailers over 3 5 tonnes.