Fuel gauge trouble

[Ralph L. Fullenwider]

Hi John:

The resistor is usually used to balance the gauge and sender and match the
ohms needed for the gauge.

It sounds like the ground and hot are reversed on one end or the other. It
should not hurt anything to replace the resistor, pull the sending unit and
reverse the ground and hot and see what your gauge does.

Safe travels,

Ralph and Charolette Fullenwider
'84 FC35 Duncan, Oklahoma
Ralph's RV Solutions

At 06:11 PM 3/14/2007 +0000, you wrote:
>Can anyone explain the resistor on the back side of the fuel gauge?.
>My fuel gauge was relaaced along with the sending unit in the tank. Since
>that time the gauge
>reads backwards and very inaccurate. I have triple checked the wires,
>ground, ignition,and
>sending unit, checked the ignition for power it was ok, the ground was
>good. I even ran an
>external wire to the tank with the sending unit pulled out and operated
>outside of the tank
>the guage shows full when float is full down. When lifted it goes to
>empty, I noticed there was
>continunity amongst all of the connectors, I removed the resistor and for
>some reason the
>guage now reads 1/2 which is close as measured off of a yard stick.
>Any of your vast knowledge would be appreciated to help me fix this Pain,
>Thanks
>
>John
>
>1984 RB 35'