Some trailer builders just connect this wire to the frame then connect the ground from all the other lights and accessories to the frame as well. The trailer wiring diagram shows this wire going to all the lights and brakes.

Wiring Diagram 7 Pin Towing Plug 1 Wiring Diagram Source
Trailer lights wiring diagram uk. Here are two wiring diagrams for the 7 pin n type trailer electrical plug. The one stop shop for all your trailer towing accessories info at towingandtrailerscouk t. 12 n type plugs are used for road lighting only. For more help please call 0330 333 1525. Uk trailer wiring part 1 lights and 7 pin socket youtube 7 pin trailer wiring diagram uk by bismillah. This 7 pin trailer wiring diagram uk model is far more suitable for sophisticated trailers and rvs.
The first diagram is a simple set up of two brake lights two indicators and two side lights. The second diagram shows two brake lights two indicators two side lights and a fog light. 01909 473 749. You may be interested in. Click on the image below to enlarge it. It may transfer power better therefore the connector is recommended for higher level electric in the vehicle.
Go to products. 7 pin 12n wiring diagram. Click on the image below to enlarge it. 1st august 2017 by western towing. 901 inclvat 751 exclvat. Load ballast resistor for led lights.
Wiring diagrams for 7 pin 12n n type trailer lights plugs and sockets. Detailed coloured12n trailer wiring diagram which is commonly used on uk and european trailers and caravans from western towing. Also it must connect with things if included that use the aux power and back up lights too. View our electrical wiring diagram guides for towbar fitting to power trailer lights and internal caravan electrics.