[solarmist]

It hasn't been tested to my knowledge, but at a minimum you will need to “restore” your car’s functionality to sell it legally.

It sounds like installers won't be able to do this modification moving forward either, so you would have to do it DIY.

[JohnFen]

Yes, that's the part I'm unclear about. And, honestly, backup cameras aren't a thing that I'm bothered by. It'd be interesting to know what the law actually means, though!