You're very unlikely to find an entire FSM scanned up on the internet - the pages I linked you to were scanned by me personally when someone else had fuse box problems. If I were you, I'd watch on eBay. That's where I got my 3 FSM's from (I've since sold one). If you don't get the exact model year for your car, it's not the end of the world - Infiniti only really made changes to the car between 1993 and 1994, so anything 1994-1996 ought to suit you fine.
This one is well worth the $20 BuyItNow even if half the stuff is irrelavent - and not THAT much changed from 93-94.
BTW don't fall for any of the "FSM on CD" things for $30 - I have that set and I'd be more than willing to "store a backup" at your place for $7.