Hi Andrew. Many thanks for taking the time to send me the link. I had already seen this but given more time I went to a link within the info that took me to another pico page about a bmw with over charge but using basically the same system. This was very well explained and how now there are so many components linked to the charging system that the days of guessing, are and should be out the window. Going by the tests I have already done and the info on the pico link it does indeed look like an alternator fault. Once again many thanks.
Les