I haven't been happy about not having a fuel gauge so I recently found that Koso make a speedo with Fuel gauge and water temperature, as well as a few other bells and whistles, so I have swapped the Trailtech for the Koso:
[IMG] Koso speedo by DARREN MORRIS, on Flickr[/IMG]
I am happy with it so far. Unfortunately the calibration of the fuel sensor doesn't match the selectable ranges and so the first half of the tank doesn't change, but at least I know when I'm running out of gas.... instead of being stranded 20km from home.