Narva | Trailer Plug Wiring Guide

Trailer Plug Wiring Guide

Trailer Plug Wiring Diagram

Our trailer wiring diagram is a colour coded guide designed to help you wire your trailer plug or socket.

Or why not make your DIY installation easier with our 'Plug and Play' solutions.

Towing Camper Trailer
 

Select Your Trailer Plug/Socket Type

Select your trailer plug & socket type from the dropdown menu and click on the product link to view the range.

Trailer Connectors

7 PIN SMALL ROUND PLUG AND SOCKET

 

WIRING DIAGRAM FOR 7 PIN SMALL ROUND PLUG AND SOCKET

7 pin wiring diagram
 

Large and small round connectors comply with AS2513-1982. Narva 7 & 12 Pin trailer connectors comply with all relevant ADRs.

6 PIN SMALL ROUND PLUG AND SOCKET

 

WIRING DIAGRAM FOR 6 PIN SMALL ROUND PLUG AND SOCKET

6 pin trailer wiring diagram
 

Large and small round connectors comply with AS2513-1982.

12 PIN FLAT PLUG AND SOCKET

 

Wiring diagram for 12 Pin Flat Plug and Socket

12 pin trailer waiting diagram.
 

Flat connectors comply with Australian Standard AS4177.5-2004. Narva 7 & 12 Pin trailer connectors comply with all relevant ADRs.

7 PIN FLAT PLUG AND SOCKET

 

WIRING DIAGRAM FOR 7 PIN FLAT PLUG AND SOCKET

7 pin trailer wiring diagram
 

Flat connectors comply with Australian Standard AS4177.5-2004. Narva 7 & 12 Pin trailer connectors comply with all relevant ADRs.

7 PIN LARGE ROUND PLUG AND SOCKET

 

WIRING DIAGRAM FOR 7 PIN LARGE ROUND PLUG AND SOCKET

7 pin trailer wiring diagram
 

Large and small round connectors comply with AS2513-1982. Narva 7 & 12 Pin trailer connectors comply with all relevant ADRs.

5 PIN LARGE ROUND PLUG AND SOCKET

 

WIRING DIAGRAM FOR 5 PIN LARGE ROUND PLUG AND SOCKET

5 pin trailer wiring diagram
 

Large and small round connectors comply with AS2513-1982.

7 PIN HEAVY DUTY ROUND PLUG AND SOCKET

 

WIRING DIAGRAM FOR 7 PIN HEAVY DUTY ROUND PLUG AND SOCKET

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. These connectors are rated at 40A continuous duty. Pin number 1 is self grounded (die cast only) with a peak rating of 70A and accepts wire sizes from 4–8mm2.

7 PIN FLAT SOCKET WITH BATTERY CONNECTOR

 

WIRING DIAGRAM FOR 12 PIN FLAT TRAILER PLUG AND SOCKET WITH BATTERY CONNECTOR

7 pin wiring diagram with battery connector
 

Flat connectors comply with Australian Standard AS4177.5-2004. Narva 7 & 12 Pin trailer connectors comply with all relevant ADRs.

7 PIN EBS ROUND PLUG AND SOCKET

 

WIRING DIAGRAM FOR 7 PIN EBS ROUND PLUG AND SOCKET

7 pin EBS trailer wiring diagram
 

Since January 1st 2015 all new trailers (exceptions apply) need to comply to ADR38/04 that specifies they have either Anti-Lock Brakes (ABS) or an Electronic Brake System (EBS) to automatically adjust the brakes. EBS (Electronic Brake System) connectors are used for the electrical connection of the ABS/EBS braking systems between the truck and trailer for both 12V and 24V electrical systems. Whilst ABS has 5 pins, EBS requires two additional contacts (7 total pins) to permit the exchange of data between cab and trailer to optimise the braking effect. The plugs are connected to the sockets with a steel latch to avoid accidental disconnection. The sockets are provided with a plug expulsion system in case the plug is incorrectly connected. Mechanical resistance and watertightness guarantee an efficient and reliable electrical connection.

13 PIN ROUND PLUG AND SOCKET

 

Wiring diagram for 13 pin round plug and socket

13 pin trailer wiring diagram

15 PIN HEAVY DUTY ROUND PLUG AND SOCKET

 

Wiring diagram for 15 pin heavy duty round plug and socket

15 pin trailer wiring diagram
 

Heavy-duty connectors meet the AS4735-2003 standard as required for vehicles and trailers over 3.5 tonnes.

 

Upgrade to 'Plug and Play' Trailer Lamps

Model 35

The Model 35 range introduces a complete 'Plug and Play' solution for box trailer lighting, making installation easier and quicker. Perfect for DIY. Narva's 'Plug and Play' waterproof connection system utilises over moulded connectors that quickly join the lamps and trailer plug to the main wiring harness. No splicing or joining of wires is required, making connections a tool free operation.

 
 

Model 37

Designed from the ground up, the Model 37 trailer lamp has been engineered for use on boat trailers where regular submersion is common (suitable for boat trailers up to 7m). The lamps are protected from water ingress with a two-stage sealing system that incorporates ultrasonic welding and a two-part epoxy glue. This allows the lamps to comply with the stringent IP68 standard. Each lamp is fitted with a waterproof connector and joins effortlessly to the main harness which is also compliant to the IP68 standard. All hardware is made from 316 stainless steel and suitable for marine environments.

 

DIY 'Plug and Play' Installation

Model 35 Installation

Model 37 Installation