I should have these in stock, however, you will be quicker and cheaper by just using a length of electrical wiring cable and crimping on a couple of connectors either end.
These work on imports:
http://www.ebay.co.uk/itm/Universal-Car-Fault-Code-Reader-U480-Engine-Scanner-Diagnostic-OBD2-OBDII-ELM327-/122087453345?epid=1782520094&hash=item1c6cfab2a1:g:3ikAAOSwU-pXss5U
Get yourself a suitable code reader for the JDM protocols or take it to a 350Z specialist.
If the CEL came on there will be a code stored which should help identify the issue, otherwise you are just guessing.