gas guage problem

[kyle thomas]

i got a 1976 glastron boat that i'm redoing from the ground up. i had to put in a new gas float unit in the tank. in this boat my common ground is on the back of the fuel gauge on the dash. it also has 3 other post on the back of fuel gauge to to supply elec. to other funtions of the boat. the problem is the fuel gauge is reading backwards. i can move the float up to where it should be reading full and it reads empty. move it to empty reads full. any suggestions guys would be apreciate. thanks

 

[Ben Konopacky]

Re: gas guage problem

did you try reversing the sensor leads,might read correctly.all that is in the sensor is a potentiometer (pot).should work..

 

[Chris1956]

Re: gas guage problem

Is the fuel gauge sender grounded as well? It needs to be connected the the common boat ground.

 

[JB]

Re: gas guage problem

Electrical topic.

 

[gaugeguy]

Re: gas guage problem

You probably have a gauge that is set up to read resistances from 10-180 ohms (VDO or european) or a 0-90 ohms (AC) from E-F and a sender that puts out 240-33 ohms (American), or vica versa.<br /><br />To verify this, disconnect your sender from the gauge and turn on the ignition. If the pointer goes beyond F the gauge is set up for a sender other than 240-33. If it goes below E you have a 240-33 ohm gauge and you just have to get a new sender for the gauge.