There is only 4 wires into the 16 pin connector,
From 16 pin socket to ECU??? i think
T16/16 Red/black - Fused 15A - to ECU???
From 16 pin socket to Earth connector
T16/4 Brown Leads to Earth connection 1, in dash panel wiring harness
From 16 pin socket to Self-diagnosis wiring junction, above the relay plate
T16/15 Yellow Leads to 2-pin connector, above the relay plate
T16/7 Grey/White Leads to 2-pin connector, above the relay plate