Hi

I replaced the speedco cable on a 92 F75 about 12 months ago and I don't remember it being any great problem.

Going from memory all you need to do is disconnect from the gearbox end which I think is just a twist fit rather than a nut and at the dash end it's drop the steering column to it's lowest adjustment and remove the speedo cluster which is held on by two bolts on top (under two prise out covers) and then two clips at the bottom. When pulling the cluster out be careful as there are a number of multi-connectors (two I think) which need to be disconnected to get access to the speedo cable itself. The speedo cable is a push fit onto the back of the speedo if my memorys right.

I don't remember it being and great problem getting the new cable through the bulkhead but I may have just been lucky.

If you take care when removing the cluster shouldn't be a drama.

Good Luck

Tony