How to install new resistor and loom to ford modeo heater fan switch?

Late 1996 Ford Mondeo 2.0 LX saloon heater fan switch needs to have resistor and associated portion of wiring loom replcaed. How is this best accessed from the dashboard area for easiest results?
Geoff Werrett. email: geoff.werrett@bristol.ac.uk, January 2006
See http://www.mirez.co.uk/map.htm

Full details of replacement procedure including photos.

Kev, January 2006
link Click here to see other fixes for Ford Mondeo.