Alternator charged intermittently, replaced with Bosch 120A unit from 1989+ models.
Previous owner had the serviced religiously and all books were current. Don't buy a Jag that hasn't been looked after.
A beautiful car, I love it, daily transport, has only let me down the once and I was going to upgrade the alternator anyway. Never let it overheat, use a good oil, and try and do as much of the work yourself if possible. Only the wealthy can afford to let someone else look after their Jag.
There are fantastic resources available for the owner/mechanic (Clubs, Internet sites, etc).
When I park it and walk away I can't help looking back over my shoulder. Impractical sure, who needs a 150 MPH 2+2 V12 when you have 4 kids. But I have always wanted one and sometimes you have to just do it.
Don't buy one and neglect it - that is a crime. The car knows, and will treat you with contempt.
I agree 100%. I've had mine for a month and love it!! Keep them alive, Tony.