The sending unit is mounted on the top or in the top of your fuel tank. It consists of the tubes your fuel line goes to and usually a fuel return or vapor line. On my 88 b-250 it's secured buy a big...
older car - knowing first hand how much gas in tank,say 5 gallons in a 20 gal. tank, would be 1/4 mark ondashboard gauge. if not, cut the color-coded wire(see which one on your make/model vehicle...