How do you change coil packs in 1998 Lincoln navigator?

To change the coil packs in a 1998 Lincoln Navigator, start by disconnecting the negative battery terminal to ensure safety. Remove the engine cover if necessary, then locate the coil packs, which are mounted on top of the spark plugs. Disconnect the electrical connectors and unbolt the coil packs from the engine. Replace them with new coil packs, reattach the connectors, and restore the engine cover and battery connection.