In your experience it goes black?
So not much experience of the fault then?
If the sensor fails, it does indeed go black.
However if the sensor is water contaminated, it shows the supply tank to be permanently full.
Listen, no one on this thread seems to doubt that Dave did wrong, even with the possible alternate scenarios on dodgy fuel gauges. My crusade is that IF the gauges fatally confused him, this could happen again. Surely it is better to say, "we don't know if gauges were involved, but there is an element of doubt, let's fix that possibility".