Oh wow, a little deeper than I was expecting but thank you!! I guess I was just hoping for the pinout diagram so I can find ground and switched 12v in the plug that goes into the mirror so I can tap it for a radar.

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Access to Hyundai Technical info is €16 for 24h, and the wiring diagrams and pinouts are great.

 

Here is the installation guide from the Hyundai Accessories website. Page 16 shows the pinout of the connectors 3 wires.
Note: This power is switched so if you're wanting constant power for Parking Mode, you'll have to run an extra wire.

 

2020 Sonata - Installing dash camera.

Installed a new dash camera. Here is some useful info on how to do it without having to snake wires all over, or cutting into any factory wiring. This method only powers the camera when the car is on. Brown wire is switched 12v. Grey wire is ground. Blue wire (unused) has something to do with...

www.hyundai-forums.com