How do you replace fuel regulator on a 1996 ford econoline van 6-cylinder?

To replace the fuel regulator on a 1996 Ford Econoline van with a 6-cylinder engine, first, relieve the fuel system pressure by removing the fuel pump relay and starting the engine until it stalls. Disconnect the battery, then remove the fuel lines from the regulator, taking care to catch any fuel that may spill. Unbolt the old regulator from the fuel rail, replace it with the new one, and reattach the fuel lines. Finally, reconnect the battery and fuel pump relay, then start the engine to check for leaks.