The ignition switch must be on for the turn signals to function. To turn on the turn signals, move the lever up or down (A). The green arrow indicators on the instrument panel indicate which turn signal is operating.
They will self-cancel after a turn is completed. If the indicator continues to flash after a turn, manually return the lever to the OFF position.
To signal a lane change, move the turn signal lever slightly and hold it in position (B). The lever will return to the OFF position when released.
If an indicator stays on and does not flash or if it flashes abnormally, one of the turn signal bulbs may be burned out and will require replacement.
Kia Niro 2017 (DE HEV) Service Manual: External AMP Repair procedures
Removal
1.
Disconnect the negative (-) battery terminal.
2.
Remove the crash pad center lower panel.
(Refer to Body - "Crash Pad Center Panel")
3.
Disconnect the external amplifier connectors (A).
...
Kia Niro 2017 (DE HEV) Service Manual: Power Window Switch Components and components location
Components
Driver Power Window Switch
[Driver Power Window
Switch (Non-IMS Type)]
Connector Pin Information
[Connector A]
(Driver Safety Power
Switch / Auto Down Power Switch)
No.
Description
No.
Description
...