Trailer Plug Wiring Diagram

 

KEEPING YOUR TRAILER CONNECTED

Narva 7 & 12 Pin trailer connectors comply with all relevant ADRs. Flat connectors comply with Australian Standard AS4177.5-2004. Large and small round connectors comply with AS2513-1982 while heavy-duty connectors meet the AS4735-2003 standard as required for vehicles and trailers over 3.5 tonnes. Available in either bulk or blister packaging, the range features plugs, sockets and adaptors in metal or ABS housings with brass or nickel plated brass terminals.

To assist with the installation of Narva plugs and sockets, below are easy to follow wiring diagrams covering the complete range of connector types. We have made the diagrams user friendly with an easy to follow numbering and colour coded system.


SMALL ROUND PLUG AND SOCKET*

 

7 Pin Small Round Plug and Socket

7 Pin Round Plug and Socket.jpg

 

 

6 Pin Small Round Plug and Socket

6 Pin Round Plug and Socket.jpg

 

 

 

FLAT PLUG AND SOCKET

 

12 Pin Flat Plug and Socket

12 Pin Flat Plug and Socket.jpg

 

 

7 Pin Flat Plug and Socket

7 pin flat plug and socket.jpg

 

 

 

LARGE ROUND PLUG AND SOCKET

 

7 Pin Large Round Plug and Socket

7 pin round large plug and socket.jpg

 

 

5 Pin Large Round Plug and Socket

5 pin round large plug and socket.jpg

 

 

 

HEAVY DUTY PLUG AND SOCKET

Manufactured in accordance with the SAEJ560 Standard and in accordance with the Australian Standard AS4735-2003. 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 Heavy Duty Round Plug and Socket

7 pin heavy duty round plug and socket.jpg

 

 

 

EBS PLUG AND SOCKET

Effective from 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.

 

7 Pin EBS Round Plug and Socket

7 pin EBS round plug and socket.jpg

 

 

 

13 PIN PLUG AND SOCKET

 

13 Pin Round Plug and Socket

13 pin round plug and socket.jpg

 

 

 

15 PIN PLUG AND SOCKET

 

15 Pin Heavy Duty Round Plug and Socket

15 pin heavy duty round plug and socket.jpg