Flight Fueler The FLIGHT FUELER is designed to aid in the safe fueling of fully cowled engines and installations where the tank is not visible. The FLIGHT FUELER sensor is mounted to the upper surface of a plastic fuel tank. The FLIGHT FUELER is plugged into the charging connector of the ON/OFF switch. The FLIGHT FUELER is ON only when the receiver is turned OFF. The FLIGHT FUELER can be left connected as it draws less than 0.05mA when the indicator is off. When the indicator is on the unit draws about 10mA. For installation and operation instructions click HERE