After two hours of work with two injured hands (not the fault of Tunze) the worst instructions since the back yard gazebo, and a small plastic clip that came within a hair of getting sucked into the intake of an Iwaki pump---I can say it's running. I used Teflon tape to 'adapt' the hose into the gripless little pump, and despite instructions and dim pix which never clearly tell you the black pointy thing is the level sensor and the white one is the flood indicator---and a wire connection which required LEANING on the pliers to make the blue wire stay in---we are RUNNING. To summarize, the black thingie IS the sensor that should be at the desired water level.
O ye who do You Tube bits, there is a crying need for one with good close-ups.
O ye who do You Tube bits, there is a crying need for one with good close-ups.