Fuel Sending Unit Adapter
In our race cars we have an electric fuel pump and by law it has to be wired to a special box that works like this. Turn the ignition on and it works for about three or four seconds then shuts off. It also has a button for manual prime. It only works after it picks up a signal from the alternator and also has a roll over sensor as well. This system should be in all cars with electric pumps!