Will this connect to my existing wiring harness?

Yes—this is factory OEM equipment for your model year. All electrical connectors are standard Kia plugs. Bolt the assembly to the door, plug in the harness, and the power adjust, heating, and fold functions activate immediately.

Do I need to remove the old mirror or can I install this straight on?

You'll need to remove the damaged or worn mirror first. Unscrew the fasteners holding the old unit to the door, disconnect the electrical plug, then reverse the steps with your new mirror. No drilling or modification required.

What if the heating element or motor doesn't work when I install it?

Test the mirror before final installation—plug it in while the assembly is still loose, cycle the power and fold function, and confirm the heating grid activates when the rear defroster is on. If any function fails, contact support for a replacement.