Hi Peter I got my coder reader but cannot locate the socket, I have read on the forums here that it should be on the drivers side down with the pedals. But the is no socket that will fit the cable I have. I brought the D900 reader on eBay and it works nicely on my Citroën. Does the S Type have a different connector? or is the OBD located else where? 1999 S Type V6SE