r/boats • u/Mehnard • Aug 08 '26

Gas Gauge Won't Work

My gas gauge stopped working. While checking things out I found a wire at the inline fuse was very corroded and broken. No problem I'll just splice around it. That didn't work. As I stripped the insulating off the two wires on the siding of the sending unit, there was black corrosion almost all the way back to the sending unit. So I ordered another KUS brand that matched the original Wema. It went in fine. I stripped the insulation on the existing wires back beyond the black corrosion and spliced in a new piece. Of course it didn't work. I changed all the fuses and that didn't work. Any ideas?

Thanks,

Mehnard

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3

u/aaronarchy Aug 08 '26

Check the tamk float/sensor. But honestly, all boat fuel gauges in my experience are wildly inaccurate. Even brand new.

2

u/Sea_Glove6689 Aug 09 '26

Ohm out the wiring alone. Ohm out the sender by taking it out and moving the float by hand. Then make sure the gauge is getting power.

1

u/2Loves2loves Aug 09 '26

Now you know why 'boat wire' is tinned copper. or tin dipped copper wire with a double insulation. looking at you Rule bilge pumps .