Document ID: chunk:federal_register_of_legislation:F2018L01515:body:0:p36
Version: federal_register_of_legislation:F2018L01515
Segment Type: other
Provision Reference: 
Character Range: 102052–104986

Connectors
2.5.1. The cables used to supply the trailer electrical energy shall have a conductor cross-sectional area compatible with the continuous current defined in paragraph 2.3. above.
2.5.2. Until a uniform standard has been defined the connector used to connect to the trailer shall fulfil the following:
(a) The pins shall have a current carrying capacity compatible with the maximum continuous current defined in paragraph 2.3. above;
(b) Until uniform standards have been agreed the environmental protection of the connector shall be appropriate to the application and included in the Annex 6 assessment; and
(c) The connector shall not be interchangeable with an existing electrical connector currently used on the towing vehicle i.e. ISO 7638, ISO 12098, etc.
2.6. Marking
2.6.1. The towing vehicle shall be marked to indicate the maximum current available for the trailer as defined in paragraph 2.3. above.
 The marking shall be indelible and positioned so that it is visible when connecting the electrical interface referenced in paragraph 2.5.2. above.
3. Requirements for trailers
3.1. The maximum current requirement of the trailer steering system shall be defined by the vehicle manufacturer.
3.2. The nominal operating voltage is 24V.
3.3. The electrical energy available from the towing vehicle shall only be used as follows:
(a)  Exclusively for use by the trailer steering system;
or
(b)  For the trailer steering system and to power auxiliary systems on the trailer provided the steering system has priority and is protected from an overload external to the steering system. This protection shall be a function of the trailer steering system.
3.4. Wiring and Connectors
3.4.1. The cables used to supply the trailer steering system with electrical energy shall have a conductor cross sectional area compatible with the energy requirements of the steering system installed on the trailer.
3.4.2. Until a uniform standard has been defined the connector used to connect to the trailer shall fulfil the following:
(a) The pins shall have a current carrying capacity compatible with the maximum current defined by the vehicle manufacturer in paragraph 3.1. above;
(b) Until uniform standards have been agreed the environmental protection of the connector shall be appropriate to the application and included in the Annex 6 assessment;
(c) The connector shall not be interchangeable with an existing electrical connector currently used on the towing vehicle, i.e. ISO 7638, ISO 12098, etc.
3.5. Failure warning:
 Failures within the electric control transmission of the steering system shall be directly displayed to the driver.
3.6. Demonstration of the operation of the steering system
3.6.1. At the time of type approval the trailer manufacturer shall demonstrate to the Technical Service the functionality of the steering system by fulfilling the relevant performance requirements specified within the Regulation.