Thanks Kelvin .... I shall have to do a little digging in my garage to refresh my mind on the motor attachment.
However, if you find someone selling heated mirrors (eBay or the like) with the 'old style' fitment (screwdriver underneath) for a 740/5 at sensible prices please either PM me or post on this thread as I haven't found one for years. I wouldn't be interested in Skandix or Volvo as I hate to think how much they might want!!
Cheers, Bob