low fuel indicator not working

Hi All:

I was wondering if someone might have an idea on how to troubleshoot the low fuel incidator in a 92 Rodeo? When I start the car, the lamp does lite, however when I'm low on fuel, it does not. I had some work done on the cruise control about a million years ago and noticed a problem but never got around to checking it out!

Basically the lamp check is on a different circuit then the actual sensor. I guess what I need to know is if the wires from the sender go directly to the dash or does it go into the engine compartment somewhere and then to the dash?

Thanks

Paul