How do you change the fuel pump in a 89 Ford Festiva?

To change the fuel pump in a 1989 Ford Festiva, first, disconnect the negative battery terminal and relieve the fuel system pressure. Then, access the fuel pump by removing the rear seat and the fuel tank access cover. Disconnect the fuel lines and electrical connector from the old pump, remove it from the tank, and replace it with the new pump. Reassemble everything in reverse order, ensuring all connections are secure before reconnecting the battery.