So here we go. I have limited knowledge of electrics so rather than get frustrated I walked away to have little think about it. As far as first installation of the new units I connected the H4 connector and left the halo buletts alone just to see if the main lights were working.On my return to the car I decided to check the possibility of one of the light units being faulty and sure enough one of them connected to either side works fine,high and low beam and no permanently on high beam indicator. I disconnected it and tried the other unit either side and the problem is there on either side,only high beam and a permanently on high beam indicator so I believe one light unit is faulty. if I connect the good unit all fine but as soon as I connect the other one as well the problem reoccurs on both sides. Hopefully a replacement unit will resolve the problem.As always thank you all for the input and I shall keep you all up to date with progress.A new unit is now ordered and should be with me tomorrow. Ralph