thanks for the responses guys. Thanks to Bacicat the problem is solved:D
Seems the power wire became dislodged and went back inside the headlight assembly. Impossible to see it in there as I couldn't get the light right out due to my bullbar.
Anyway all is good now.
Just one other comment regarding whether the upgrade is a good idea or not. I appreciate that the warm up time is a minor problem, fact is that in my case i have a very good set of LED driving lights which also come on with high beam..... they are instant and so the small delay with the head lights isn't a major issue to me.

