Love this install
@KevinY ! Thanks for pointing me in the right direction on this. I added a 12v socket to my plaid last night. I have the exact same use case, a 12v fridge that we use on trips. I loved the 12v in my X, but I had been supplementing it with a small Jackery 300, since that 12v was switched. It will be nice to not need to carry a supplemental battery in a car full of batteries.
I just want to verify with you that this 12v line is indeed unswitched in your testing. The car has been charging since I finished adding the 12v socket, but I assume you've had plenty of time to verify that it does indeed stay live all the time? I set off on a long road trip tomorrow, or I would have spared you the lazy question.