I have done this many times. Simple, foolproof and dependable system. Do not get pulled into making this complicated and "state of the art". Systems like that have a very short and tragic life time, can cause fuel spills and running out of fuel. My system needs a 2'pipe plug tapped hole in the top of the tank and electrical connection to a control box I will supply. Box has manual/automatic switch and alarm outputs to your choice of alarm.