I have a 1999 Jaguar XK8 and the power steering went out so we replaced the power steering pump. Still didn't work. Now we are leaning towards the rack and pinion relay module.
We were told it is under the driver's side front bumper where the metal section of the bumper frame starts, next to a bracket.
My husband has cancer and on blood thinners, his arms are black and blue and bleeding from searching for this little bugger.

Can anyone advise where it is at please

 

Just checking if you have consulted the electrical guide for your model/year that gives you locations in the car of all the relays and modules, plus electrical diagrams. If not it can be found in sticky threads section, under 'XK8 and XKR HOW TO' > DOWNLOADS (Assorted Tech Guides)
Sorry - I can't tell you locations of these elements since I've not had to work on the power steering system....