The spare wiring inside the equipment routed to the interface connectors shall be terminated and marked at both ends.The calculation and the sizing of the cabling shall be designed to meet the expected life time of the vehicle.Flexible cable types shall be used where cables are under dynamic fatigue load (e.g. motor to mechanism), minimum class 6 according IEC 60228The use of special cables shall be declared during tendering and is subject to prior agreement with BT2.2.2.7.2 Connectors