Make the wiring connections as depicted on the wiring diagram. Be sure the unit is dry before you attempt to calibrate. Residual liquid left inside the tube will give an erroneous reading and affect the calibration. If the unit has been in liquid, shake out the residual liquid before you attempt to calibrate. This completes the calibration.
Unit is ready for installation.
Place the gasket on the sending unit. Align the holes and apply a sealer such as Permatex on the gasket. Put a small amount of sealant in the mounting holes and insert the mounting screws with flat washers and lock washers. Place the sending unit in the tank. Note the holes are not symmetrical, rotate until the holes line up, then tighten down the mounting screws.