thanks erbroens,

the fuelwatch system is a "stand alone" solution. The system is self-contained. The only thing to do is to put the Flowmeter between the turbine and the pump (preasure side) . Connect the AirUnit to a free port of the reciever or Y-cable (voltage detector R/C Unit and power suply for the AirUnit). But the idea with the second voltage detector for the pump is a great idea! Hmm... i think i will add this function. This will be the fith warning "Turbine stopped" or so.