Fuel Gage

[Lawnpro979]

Hello all I received a boat. 16' fishing, it's been setting for a while, But keep inside and well maintained, I took her out this weekend and everything went well, but the fuel Gage doesn't work. the person i received it from just installed 2 trickle chargers, I pulled wires off the gage cleaned, they all look good, it does light up, it has an onboard fuel cell. 10 gallon, I briefly, looked at the wiring, at the battery boxes, nothing jumped out at me, also, thr trolling motor, it's a 12v. I sprayed it with wd40 just to get the peddle, to go back and forth, it's getting juice, it's the motorguide model,not sure how to troubleshoot it, I looked at all the connections under the pedal, they look clean, I sprayed them too, Thanks

 

[Bondo]

Ayuh,.... Welcome Aboard,..... The fuel gauge has a light power wire, an ignition power wire, 'n the sender wire,....
It measures the varin' resistance to ground of the sender,....
So, disconnect the Sender, 'n ground out it's wire, the gauge should Peg to Full,....

 

[Lawnpro979]

Thanks for reply,,,,, found it in help topics, guess that's Another rookie mistake