Heavy Vehicle (Vehicle Standards) National Regulation

The wiring of electrical equipment of a heavy vehicle, other than the high tension ignition wiring, must—

be supported at intervals of not more than 600mm, unless the vehicle is a pole-type trailer with a pole with an adjustable length or is an extendible trailer; and

be insulated at each of its joints; and

be located where it can not—

become overheated; or

contact moving parts; or

come near enough to the fuel system to be a fire hazard; and

be protected from chafing.

The electrical components of a vehicle must be securely mounted.

The electrical connectors between a heavy motor vehicle and trailer, for operation of the vehicle lights required by this Regulation, must comply with at least 1 of the following—

• AS 2513-1982 Electrical Connectors for Trailer VehiclesNote—AS 2513-1982 ‘Electrical Connectors for Trailer Vehicles’ may be purchased from Standards Australia.

• International Standards Organisation ISO 1185—1997

• Society of Automotive Engineers SAE J 560—1998

• AS 4735-2003 Heavy road vehicles—Electrical connectors for articulated vehicles.

A heavy trailer must be equipped with an electrical conductor, independent of the trailer coupling fitted to the trailer, that makes a return path between the electrical circuits of the trailer and towing vehicle.

In this section—electrical connector means a device intended for making a detachable electrical connection between a motor vehicle and a trailer.high tension ignition wiring, for a vehicle, means wiring designed to transmit electrical currents for the purpose of igniting fuel in the vehicle’s engine. sch 2 s 17 amd 2017 SL No. 113 s 23