Fuel gauge u s

[Bov783]

Hi all
Any way to test the gauge.
I’m hoping it’s not the sender as it looks difficult to remove!!
The connections are G S and I

 

[hughespat57]

I is 12 volt positive Ignition
G is ground
S is tank Sender


Normal US/SAE marine senders are 240 - 33 ohm (Empty-Full)
So open circuit the gauge should be at Empty, connect to ground = Full.
If the gauge does not do this you have a bad gauge
It's always easier to validate the gauge first then to pull the sender.

Step by step determination of what type you may have:
https://www.vdomarinegauges.com/vdokb/determine-sender-resistance-for-a-gauge-2009-2/

Use these for $12 and you can test justabout any gauge.
2pcs RV24YN20S Single Turn Carbon Film Rotary Taper Potentiometer + 2pcs A03knob + 2pcs dials (B501 500 ohm)
by SEA-GULL
Learn more:https://www.amazon.com/dp/B074KBX9RZ/ref=cm_sw_em_r_mt_dp_ehD-FbY8NPWXK?_encoding=UTF8&psc=1

 

[scoflaw]

To be clear, what 57 said and the sender terminal to ground should read full on the gauge, removed shold read empty.