You should always attach chains between your vehicle and your trailer. Cross the safety chains under the tongue of the trailer so that the tongue will not drop to the road if it becomes separated from the hitch.
Instructions about safety chains may be provided by the hitch manufacturer or by the trailer manufacturer. Follow the manufacturer’s recommendation for attaching safety chains. Always leave just enough slack so you can turn with your trailer. And, never allow safety chains to drag on the ground.
Hitches
Trailer brakesKia Cee'd JD Service Manual: Rear Washer Switch Repair procedures
Inspection
Check for continuity between the terminals while operating the wiper and washer
switch. If it is not normal condition, replace wiper and wiper switch.
Rear Wiper Switch
Rear Washer Switch
...
Kia Cee'd JD Service Manual: Cooling Fan Repair procedures
Removal and Installation
1.
Disconnect the battery negative terminal.
2.
Remove the air cleaner assembly.
(Refer to Intake and exhaust system - "Air Cleaner")
3.
Remove the battery tray. ...