Helm Guage Fuses

[Jon Snellings]

In one Guage on my 2021 Bennington SX23 pontoon boat, the trim level and fuel indicators stopped working. (The voltage indicator is fine.)
Thoughts about my problem? Fuses?

 

[kaydano]

A quick and obvious check is to be sure the wiring harness connectors are all well connected under the helm. I've had problems where connecters were not pressed together tight enough to "click shut" and slowly vibrated loose over time. One came apart just partially on a riding mower once, which could explain why the voltage part works and the trim and fuel don't (if a gang connector was partially loose, some wires could be connected while others not).

If two of the three needle gauges (on one gauge assembly like you describe) quit working, it's highly unlikely that you had a trim sensor issue AND a fuel sensor issue simultaneously. I mean, what are the odds of that? So to me, that points you toward the problem being closer to the gauge and there is probably not something wrong with your motor AND gas tank. That's good news. Probably a cheaper, simpler fix.

My old 2012 SSL doesn't have any fuses, just resettable breakers. If you have fuses, that's an obvious check to make too. Make sure your breakers are all pressed in (that's how mine operate).

 

[DVW]

Totally agree with kaydano. The problem is most likely the Deutsch connector not totally plugged into the back of the three in one gauge. Less probable is the gauge itself. I have a gauge leftover when I modified my 2021 SX22 (see photos). It is yours if you need it. At the time I created a diagram to better understand how the gauges were originally wired to the engine harness and fuse (see photo). Your gauges are most likely wired the same way. Hope this helps.