I know that a lot of us have the 230 FT engine.
Here is what I am pretty sure is the Volvo Green Book, covering IGNITION SYSTEMS for that engine, as well as many others.
http://www.scribd.com/doc/15547364/V...13971-Ignition
It's a lot of info and takes a bit of time for the page to download so wait for it and don't get all clicky and impatient 'cos then you'll screw up the download... !!....but it's very good.
and also: Ignition Wiring Diagrams:
http://www.scribd.com/doc/54224568/V...iring-Diagrams
I've had a brief look through it, and it is really good, so I'd like to share it with you all. My advice, print it off while it's available. these things have a habit of disappearing from websites.