How do you change the top fuel injectors lines on 1991 jaguar V12 xjs?

To change the top fuel injector lines on a 1991 Jaguar V12 XJS, first, ensure the engine is cool and disconnect the battery. Then, remove the engine cover and carefully detach the fuel injector connectors. Use a line wrench to unscrew the old fuel lines from the injectors, and replace them with new lines, ensuring a proper fit and sealing. Reconnect the injector connectors, reinstall the engine cover, and reconnect the battery before starting the engine to check for leaks.