I finally found some strapping to replace my gas tank straps, so I lowered the tank and removed the sending unit and it is marked 30 ohms. When I connect the two leads to the sending unit(black to ground and red to the screw terminal on the unit) and the float is in the empty position the meter reads 00.6 as soon as I move the float up the meter reads infinity. Is this correct or should it be slowly moving up to 30 ohms to indicate a full tank