BRUN, the ISO is one i got from Halfords (as the original was chopped off) so should have the connections stamped on the cable or, at worst, you get them off the Smartlead/Autolead website. Once youll have that youll be able to match them against a clio wiring diagram in Haynes etc if you dont think theyre write or alternatively speak to someone else with a 16v/clio.
Hope this helps