Red water light constantly flashing

[ManiacuV6]

Try to take off the connctor from the tank and use a wire to connect the 2 terminals. IF you don't get a light after that try to change the tank with a quality one .

[ross b]

Yes tried bridging the terminals, no change

[ManiacuV6]

So you need to take the instrument cluster off and to measure the wiring from tank's connector to instrument cluster . I don't think that is a problem with the instrument cluster.