1993 Jaguar XJ6 jump starting

Electrical problem
1993 Jaguar XJ6 6 cyl Two Wheel Drive Automatic
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hi,
my dad has a 1993 Jaguar xj6.
i was wondering if yould please help me, my father has asked to find out exactly where and what the positive pole in the engine bay looks like and exactly where it is, as i am not there to help him with it. a picture would be great.

thanks for the help, love the website.

Thanks