In article ,
wrote:
What matters in any home wiring you do is *internal* consistency, so
that all the fixed wiring you put in at various times is done to the
same colour code. And I'd suggest you stick to the 568B=258A variant if
you have no compelling reason to do otherwise.

Thanks for the explanation Stefek and everybody - at at least for once I
seem to have picked the right one out of two.

I must get into the habit of Googling for things now I'm not paying per
minute. ;-)

--
*Two many clicks spoil the browse *

Dave Plowman London SW 12
RIP Acorn