Here are some important points if you decide to pull a trailer:
M/T : Manual transaxle
A/T : Automatic transaxle
DCT : Dual clutch transmission
Kia Cee'd JD Service Manual: Rear Pillar Trim Components and components location
Component Location
[5Door]
1. Rear pillar trim
[3Door]
1. Rear pillar trim
...
Kia Cee'd JD Service Manual: Power Outside Mirror Switch Repair procedures
Inspection
1.
Disconnect the negative (-) battery terminal.
2.
Remove the the crash pad garnish [LH] (A).
(Refer to Body - "Cluster Fascia Panel")
3.
Check for continuity ...