It helps to read the manuals. The Cummins engine manual talks about the WIF sensor on the fuel filter and how it will trigger an icon on the dash panel if a certain amount of water is in the filter. Mine has a screw on filter and a plastic button on the bottom, so I pushed it in and got diesel on my hand, no water. Plastic gloves would have been better, but they were at home... However, I cannot see where the icon would be on the panel as it has to be lit to see anything, and apparently it has never been lit as I can't see it. I guess all of this is good news. At least I now know what is supposed to happen if there is water.
The Spartan Chassis manual shows all the icons that should be on the panel and there is not one for WIF on their data sheet of symbols. It may be there anyway since there is a sensor for it at the filter.
John & Deanie, Corky and Benji (best buddies)
2001 National Marlin 390 DP
"Try to live up to your dog's opinion of you."