anyone wired their Smiths Telemetrix speedo up to an mt75 gearbox speed sensor?

im not sure which wire to wire it up to ont he gauge ( there is a hall effect input and a low voltage input ).

U2U sent..

I seem to remember Greenguages being the people to speak to. Their number was 01639 732299 tech advice...not sure if still in use.

thanks for the help!

Personal experience from today and with some input from Caerbont ( Smiths , Telemetrics) try either black/white or red/blue, you wont do any harm as long as you connect the rest of the wires correctly i.e don't just wire one side if the MT75 sensor to the speedo but use it as a telemetrics sensor which i think, please chech, is live to one side and return to guage

Mines plugged straight into the speedo...

Smokes a bit at 180 though...