The adapter you need, you will need to get 2 of them, one for front and one for back:
Tesla Model 3 2017-2020 Adapter to allow use of new USB-C | Etsy
M3, CONSOLE, REAR VENT ASY, PREM BTN Part #: 1111072-00-E
MY USB HUB FRONT Part #: 1522264-00-B
Then for the rear you literally just pull and it comes off and swap it.
For the front, it's six simple bolts and then the three little screws old the usb hub, simple swap out and then screw it all back up.
Tesla Model 3 2017-2020 Adapter to allow use of new USB-C | Etsy
M3, CONSOLE, REAR VENT ASY, PREM BTN Part #: 1111072-00-E
MY USB HUB FRONT Part #: 1522264-00-B
Then for the rear you literally just pull and it comes off and swap it.
For the front, it's six simple bolts and then the three little screws old the usb hub, simple swap out and then screw it all back up.