Graham,
The cable came off a 1275 mini, it was a brand new cable before I put the anger grinder through it, yes it is a screen cover I never took it off, I can take another picture with it taken off if you wish. To the best of my knowledge it's in working order, it was only taken off as when I updated to the MGF engine I went with the clocks from that. Wiring diagram I may have but it can be found on the Internet anyway, I may still have the box but currently can't get to the back of my garage to check. You can converse here or by email mine is alan at pheaton dot + dot com that + is plus
Alan...