How do you replace the fuel pump on a 1989 Isuzu Amigo?

To replace the fuel pump on a 1989 Isuzu Amigo, first, disconnect the negative battery terminal and relieve the fuel system pressure. Then, remove the fuel tank by unbolting it and disconnecting any fuel lines and electrical connectors. Once the tank is out, access the fuel pump by removing the retaining ring on the top of the tank, then replace the old pump with the new one, reassemble everything, and reconnect the battery. Always ensure to check for leaks before driving.