You don't give email address to send diagram to but I have an old H reg mondeo book and it doesn't show the pipework, no book I know does.
You could try phoning your local library and ask if they have workshop manuals to lend. when I lived in London up to last year our library held manuals. If they have and your not a member then go in with pencil and paper look up the book and take notes.
bob, October 2005