The red light on the "dash" won't go out and I can remember what it means. If it's on does it mean that the alternator's not working cos the systems not charging?
Alternator conversion would be more practical but, if you would prefer a replacement dynamo try the Land Rover orphanage or the Land Rover Dogs Home on ebay.
Thanks for correcting me a dynamo is what I want. It's been so long since I tinkered with the Landy and 10 years of company cars has made me so forgetful.