How do you install coil packs on an engine?

To install coil packs on an engine, first ensure the engine is cool and disconnect the battery for safety. Remove any necessary engine covers and locate the coil pack assembly, then carefully disconnect the electrical connectors from the old coil packs. Unscrew the bolts securing the coil packs and remove them from the spark plugs. Position the new coil packs over the spark plugs, secure them with bolts, reconnect the electrical connectors, and reassemble any removed components before reconnecting the battery.