Hi where abouts is the inspection/diagnoistic socket on a 93 wrx import many thanks

 

It should be under the steering column. But its not an OBDII, pretty sure its some 16 pin job.
If you are wanting to use it for reading trouble codes, most readers wont work. You can however read them for free, using the green connectors. See here: http://www.scoobypedia.co.uk/index.php/Knowledge/ECU and here: http://www.scoobypedia.co.uk/index.p...gECUCodes#toc3