Where to buy a good electrical diagram and s-57 manual for series 3

All the references I can find on this site to obtain electrical manuals and diagrams are no longer functioning (such as Jag Services in IL) How and where can I obtain the best material to assist me in fixing electrical problems? I bought a cheap poorly made reproduction of the S-57 Publication from
Books4cars in Seattle but it came missing just the last two sections I really need to see!

I have a .pdf of Jaguar Publication S 57 but it is over 11mb and 164 pages.

I am guessing it will NOT upload as an attachment to this post.