Many thanks for that. I have not been able to locate the road speed sensor yet. I don’t seem to have a mechanical speedo cable.
I need to do a bit of research.
If you do have a cable driven speedo (which is most likely) then the Road Speed Sensor is probably mounted on the inside of the bulk head cut out where the transmission leaves the engine bay, it's a really fiddly position and is hidden from view. Locate where the clutch slave cylinder is mounted on top of the transmission and feel just behind it on the bulkhead side and you might be able to find the small square box with the speedo cable going in and cable coming out to the speedometer. The way I got to fix mine was by removing the transmission cover in the cabin.
