Terios Speedo

Forum: 

Anyone help with a little problem I have on Phoebe, our trusty little Terios.

The speedo is regularly dropping to zero, which I'm hoping is just a poor connection somewhere. I had the instrument pod out and know the connections are good on that, so I'm now looking for the sensor, any ideas where it is? I'm thinking the gearbox but where exactly? I've downloaded the manual for a wiring diagram but it's a little vague to say the least and only seems to cover the automatic as far as the instrument cluster goes. Not got as far as the gearbox page yet, any ideas?

Cheers, Paul