Hi all,
the sticky FAQ post has a nice collection of Service Manual for XJ Series 3, but it lacks at least V12 sections. Does someone know where to download or buy a more complete Service Manual (I guess it is called publication AKM 9006 Edition 5) in pdf? I know there are printed version for sale, but a pdf is more practical.

 

Edition 5 isn't really much better than [the more commonly found] Edition 3 for V12 owners. The info, what there is of it, is poorly organized and has obviously been condensed.

For V12 specifics I've found XJS manuals to be more helpful, personally. Even then, what's commonly being sold are condensed/edited versions of the true multi-volume 'factory service manual'.

The S57 Wiring Guide and S58 Performance Guide will also be useful to you although both were published before 1990 so there are bound to be some differences.

In short, I've found no single publication that gives me everything I've needed or wanted. But, by gathering various manuals, Tech Service Bulletins, the S-series supplemental publications, and parts catalogs, a fairly complete picture can be painted

Cheers
DD