Cheers for the reply. When i bought the car the bottom part of the speedo cable was missing and ever since i had the car the speedo clock never worked. As far as i know the gearbox has had a LSD fitted and uprated bearings. Is it standard practice to use the original gearbox or could it be a gearbox off another car?
This electric device is screwed into the top of the gearbox, its not much bigger than a pack of cigerrates. so you say that the end of the speedo cable simply pushes into this, is that right.

From what i remember i have seen different numbers on the trip computer but not sure on what setting they were on?

CheeRS
Gerard