With the help of njerald on this forum, I was able to successfully swap out the basic rear view mirror with an upgraded unit off of a 2014 Kia Optima.
This isn't too bad to do if you are inclined to solder and tap into wiring. Mine looks factory and it is really nice to have the garage door opener and as a bonus a compass option. The one thing I didn't think about but really like is the auto dimming feature based on light, it really reduces the headlights in the dark and makes for a much more pleasant driving experience. Highly recommend consider doing this, Kia should make this an option.
I forgot to take before pics, but you can look at your own for those.
Here is the windshield with the cover removed, there are two clips on the front bottom closer to the hood, you can stick a small flathead under to release them carefully, then pry around to pull it off.
The connectory with the black felt wrapping is what you will connect to. It unclips easily.
I pulled apart the wires and connected to the black and blue on the right side (black negative, blue 12V ACC)
Pigtail I used so I can disconnect if the mirror needs removed or windshield replaced in the future.
Here is my harness all tidied up.
These wires are coming from the mirror, the black is ground and the other three power the compass, homelink and dimming feature. I tied the the three wires together to the blue ACC wire above in the harness and black to the black in the harness above.
Mirror wires connected and tidied up.
Wires connected to the harness powering the module on the window
Mirror from 2014 Kia Optima
Any questions, fire away.