How do you change the spark plugs and wires on a 1991 Mercury Capri?

To change the spark plugs and wires on a 1991 Mercury Capri, first, ensure the engine is cool and disconnect the negative battery cable. Remove the spark plug wires by pulling them off the plugs, taking care not to damage them, and note their order for reinstallation. Use a spark plug socket to unscrew and remove the old spark plugs, then install the new plugs, tightening them to the specified torque. Finally, attach the new spark plug wires according to the original order and reconnect the battery.