Kia Optima: Check FusesA blade type fuse test taps provided to allow checking the fuse itself without removing if from the fuse box. The fuse is good if the test lamp lights up when one lead is connected to the test taps (one at a time) and the other lead is grounded. (Turn the ignition switch so that the fuse circuit becomes operative)

Checking Cables And Wires
Servicing The Electrical SystemInstallation
1.
Installation is reverse of removal.
PCV Valve installation:
1.9 ~ 2.8 N.m (0.19 ~ 0.29 kgf.m, 1.4 ~ 2.1
lb-ft)
...
Cruise control system
The cruise control system allows you to program the vehicle to maintain a constant
speed without depressing the accelerator pedal.
This system is designed to function above approximately 40 km/h (2 ...
Sunvisors
To use a sunvisor, pull it downward.
To use a sunvisor for a side window (if equipped), pull it downward, unsnap it
from the bracket and swing it to the side.
There is a pocket on the driver’s ...