Hi, I have had a go at installing an after market head unit in my 2008 fiat panda. When doing so I think I have shorted out something because i did have it working fine then after taking out to re adjust the position it now won't work and neither will the standard head unit. Please can someone tell me if there is one or more fuses and where they are. It's not the fuse on the head unit either. Thanks any help will be appreciated.