Most of solutions are for Mk2 model...
This, from 'Chas Uno' is closest I find
' I have a mk1 Uno turbo instrument cluster that I've yet to fit to my 1986 Uno. Problem is, as Alex mentioned, a few of the gauges need extra sensors to make work in full.
As I have a mk1 SX instrument cluster fitted (with tacho, and I also swapped in the econometer from the 45S standard cluster), everything hooked up and worked no problem. The tacho just needed one extra wire from the low tension side of the coil, and I incorporated that into the multi pin plug for the dashboard'
On which pin it goes ?