2002 is pre-facelift for all intents and purposes. Eu3 motor only adds a couple of wires to the loom otherwise it is same as 1999-2001. Tail light wiring changed with the facelift, hence Erich's question.
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OK have fixed the problem.
it was a problem with the cable going into the socket. Out of frustration, I was moving the cable while the blinker was active, and moving the wire left to right I was able to make the indicator activate.
So cut and splice a part of the cable, and all is good now.
Not sure how this could have happened, just glad that it is all fixed now.
Thanks everyone for the suggestions and help.