Help - Ford T9 Gearbox Speedo Drive

[Spikehaus]

Help!!

I have Ford Type 9 Close Ratio Gearbox with an electronic speedo (Pulse output) drive. Does anyone know how this could be used to tap an output for a digital speedo?

Failing this does anyone have an old broken gearbox with amechanical speedo drive in it that they could sell to allow me to use the orginal sierra clocks? I am not sure if it best just to exhange the tale or just the speedo drive. Real pound notes awaiting a good home.

Any help appeciated.