Thanks Mike and Jebowhite. That looks like the correct interpretation.
I found a fix on another forum for the instrument cluster problem. It seems that it is related to damp on the pcb.
I'm not sure how long the fix will work for................... but it does work.
Remove the trim from around the cluster. There are 4 or 5 posidrive screws at the top. The bottom is held by push in studs.
It is a bit tricky to get these out without scratching the cluster front!
There are 4 screws holding the cluster in place, remove these and swing the cluster round.
The white connector on the back has a black locking lever (it's difficult to see how this works).
Pull the lever away from the direction of the cables, over the little block. As this moves it will help push the connecor free.
On the back of the cluster are 2 torx screws and some plastic loops. Remove these and remove the back to expose the pcb.
Spray the pcb with WD40, I used a small brush to spread it over the back and clean the board.
I put the unit in the airing cupbaord overnight, fitted it in the morning and found that it was OK.
If it doesn't work for long it will be easy to replace it, they seem to be available new on the net for about £60.
Better than paying Ford main dealer silly prices!