A seat belt should be used when an injured person is being transported. When this is necessary, you should consult a physician for recommendations.
Kia Cee'd JD Service Manual: Seat Heater Switch Schematic diagrams
Circuit Diagram
[LHD]
[RHD]
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Kia Cee'd JD Service Manual: Components and components location
Components
1. Front seat belt
2. Height adjuster
3. Rear seat belt
4. Rear center seat belt
5. Rear seat belt buckle [LH]
6. Rear seat belt buckle [RH]
...