Hi car decided not to strart, I have sparks and everything checks out except no fuel I think. I opened the injector rail and no fuel. I found the cut off switch and reset that just in case.I put an ecu scanner on her and it said there was a problem on the fuel relay cct.I have all manner of Fiat manuals but none tell me where to find the damn relay /fuse. All help gratefullu received. Thanks

Try the repairs microsite, looks like it may help
https://sites.google.com/site/fiatmultipla/Home/repairs

Look in electrics> underbonnet fuse locations