Land rover do a kit for the td5 which just plugs in and is complete with all the stuff you need to fit and may be change.At the moment I don't know the part number but it starts STR.If you look on The Green Oval - Home and you can download the Rave cd for all you repairs and info,or there is the microcat parts program which you can download and find all the part numbers for the disco and other LR models.