What does the manual say?
What has happened to make you think a fuse has blown?
Some fusebox info here:
I have a 65 reg Cross and want to wire in a dashcam. Thought the best place would be the interior fuse box... but cannot find it! Manual says to the left of the steering column and easily accessible under the dashboard. I've been upside down under all of the dashboard and cannot find it...
www.fiatforum.com
Do let us know what you find.. photos are always good