Another weird one today. There is an accessory power socket that I use to power my action camera. When I plugged in this morning I noticed that it wasn't working. So when I got to work I checked the fuses and the 10amp fuse for the power socket had blown. So I swapped it for the spare and that blew too.

Later in the morning I went back and replaced the blown fuse with a smaller form one from my V-strom that I had in the bag, that fitted the socket. It is still going fine. So the only difference is the shape of the fuse. More investigation required.