Thanks for the response, have puchased the correct adapter but it still won't communicate. So far a bit dissapointed as the product seems OK but the support and updates etc and forums are so slow they are mostly unusable.
Unfortunately the 38 pin for the Mercedes doesn't work, I've tried it with a Delphi before. What you should do is is purchase Iveco socket that goes with Commercial vehicles. The pins may look similar to that of MB but it won't connect