Under the bonnet of my Rovers lives a fusebox with normal blade fuses and also some that are simply strips of metal with a ring at each end. I suspect that is the fuse Volvo were thinking of or perhaps a fuse wire with a ring crimp each end Bob as there isn't much room behind the instrument cluster for anything extra t5a9-6cke+d on the back of it.
Err, that should be "tacked" but my Rottie decided to rest her head on the numeric keypad while i was typing!