connects have problems like this, another one is the crank sensor which is hidden at the bottom and at the back of the engine, apparently if this isn't plugged in or is faulty, then the connect engine won't turn over.

true aswell:
1) Cable between battery, alternator and starter are prone to wear and tear and will break, resulting in a non starter/battery light coming on and off on dash.
2)afaik the diesel pump does need coding to the ecu for it to work properly
3)also afaik the pumps are self priming? - depends on the year?
4)2 fuseboxes - one under bonnet by battery for all externals and relays, one fusebox inside which does all the little fuses, lights, radio, etc. (the usual stuff)

is it the TDCi engine or TDDi and what size engine is it? 75, 90 or 110?