ive been searching this long and hard and i havent really found anything. i know some of you fuel nuts have your eyes glued to your gas needle to watch it move ever so slowly. but for those of us that dont, wouldnt it be nice to have a lil light or annoying beep to come on at a selectable fuel level to let you know that you have barely enough to get to work on?
this mostly applies to older cars that dont have one. like my fiero. i would love to have one on it. and other old cars like it, you cant really rely on what the gas gauge says.
the fiero gas gauge, and probably the same for most other GM's and some others uses a resistance level to tell empty from full. the fiero's is 90 ohms @ full, and 0 ohms @ empty.
it doesnt seem too hard to do since its acting like a varisistor. but i would like others thoughts and opions on this.
comments that only apply to creating a circuit please 