Suddenly yesterday the speedometer stopped working. So it was off with the passenger side dashboard to check it. Soon found the cable had come out of the instrument cluster so pushed it back in. I thought it should screw in but couldn't get the outer cover to turn. Maybe it is just a push fit and it had vibrated out ?
So took it for a test run and the speedo was fine, but now the tachometer wasn't working. I also noticed the oil pressure light in the instrument cluster was not working although the auxiliary one I have mounted on the top panel was fine. So I assumed I had disturbed a wire while fiddling around behind the cluster.
So off with the dashboard panel again, unplugged the main lead plug from the back of the cluster and looked for a break. Everything seemed fine, although still a rats nest. So plugged the lead back in again and 'bingo', everything worked. So maybe the plug had also vibrated loose.
Anyway, everything now working again. Which is a good thing as it is bl...y cold in the garage :-)