Point detail

(a)    The electric control line shall conform to ISO 11992-1 and
11992-2:2003 including its amendment 1:2007 and be a point-to-point type using:
   (i)     The seven pin connector according to ISO 7638-1 or 7638-2:2003 or,
   (ii)     In the case of systems where the connection of the electric control line is automated, the automated connector shall, as a minimum, provide the same number of pins as the above- mentioned ISO 7638 connector and meet the requirements specified in Annex 22 to this Regulation. 
(b)    The data contacts of the ISO 7638 connector shall be used to transfer information exclusively for braking (including ABS) and running gear (steering, tyres and suspension) functions as specified in ISO
11992-2:2003 including its Amd.1:2007. The braking functions have priority and shall be maintained in the normal and failed modes. The transmission of running gear information shall not delay braking functions. 
(c)    The power supply, provided by the ISO 7638 connector, shall be used exclusively for braking and running gear functions and that required for the transfer of trailer related information not transmitted via the electric control line. However, in all cases the provisions of paragraph 5.2.2.18. of this Regulation shall apply. The power supply for all other functions shall use other measures.