Worked on developing a system to ensure that the fuel pump electrical power is disabled if the engine stops while the master switch and fuel pump switch is on. I attempted to use the ignition controller Megajolt Light Jr. tach output and User Configured Output. Determined that this approach will not work because the MJLJ User Output does not function with very low engine RPM. Decided that a "missing pulse detector" sensing the MJLJ Tach Output and operating a relay controlling electrical power to the fuel pump should perform the function.