THERE IS SO MUCH INFORMATION HERE!!!
Thanks for the link Pedro, it certainly has the D2 information as regards to the wheels and accessories, it seems it is English spec as the SAT NAV is for GB and there are no real bull bars!!! My brain loves this stuff.
Thanks also PhillipA, does your install show the CDL is binding or just location of the "switch" on or off - it sure seems the 2000 with the CDL actually fitted will have a light at least if yours doesn't.
NICE INSTUCTION SET FOR CDL ASHCROFTS and CDL LIGHT
Found this on the web
www.discovery2.co.uk/Factory Diff Lock
It would appear from the pictures from 16 on shows the electrical connection for the CDL light and it has a wonderful explanation and solution to the CDL / TC ABS HD functionality with a slicing of the wire from the SLABS
Thinking when I do this, will take the advice of bullet connections but then actually fit a switch to enable /disable and probably mount it near the diagram on the centre console