Water In Fuel Indicator Always On (MOTORHOME - Diesel)
- Disconnect water in fuel sender. If indicator goes out, replace water in fuel sender. If indicator remains lit, go to next step.
- Disconnect instrument cluster harness connector. Connect test light between harness connector terminal No. 3 (Yellow/Black wire) and battery power. If test light lights, repair short to ground in Yellow/Black wire. If test light does not light, repair and/or replace instrument cluster.