I used this, got the bits from maplins




As for the wiring as you look at the back of the mondeo tacho you have 3 pins top, middle and bottom

The top pin on the tacho goes to the left pin on the ribbon cable

middle pin(the one with white tape on it) goes to the middle pin on the ribbon cable

and the bottom pin on the tacho goes to the right pin on the ribbon cable




hope that all makes sense