What you see in the picture below is the ignition coil,follow the plug wires to the other end it will take you to the spark plugs.
SPARK PLUG REMOVAL/INSTALLATION
CAUTION: If a spark plug that is not as specified is installed, sealing performance will be deteriorated. Install only the specified spark plug when replacing.
Disconnect the negative battery cable.
Remove the high-tension leads. (L3 engine model)
Remove the spark plug using the plug-wrench.
Install in the reverse order of removal.
Tightening torque: 10 - 14 N.m 1.1 - 1.4 kgf.m, 8.0 - 10.3 ft.lbf