Ok here's what you do, first do you have the manual? If not then buy one as soon as you can, next your going to have to follow the wiring from the battery (red wire) to the fuse box, unfortunately there is no way for me to tell where your fuses are, they could be under the seat behind the fairing or tucked away in half a dozen places, your just going to have to hunt for them and it still might not be a fuse..! This is just my first port of call for this sort of thing. Sorry Chris but it's a mare to try to offer advice on someone else's bike. Just looked on the XV owners site and I "think" the main fuse is under the seat (20Amp) if that blows then the bike will be dead, apparently it's usually a short to ground that causes it to blow, known fault.