General fuel gauge question

[johnbray46@hotmail.com]

I would like to know, I had a fuel gauge problem, didnt go to zero when turned off when full showed only quarter full when on.
Now all dials show nothing ie speedo, revs.
FIAT DUCATO 2003, 2.8 JTD MOTORHOME PLEASE HELP

 

[wayfarer]

Check all fuses under bonnet near air filter.