PauliePucks
3rd Party Accessory Junkie
I remember one of the early videos I saw on the swap, might’ve been Daerik’s where he said the tesla service manual suggests disconnecting both.Disconnecting HV and 12v. I think it's probably a crapshoot what problems you'll have if you don't. Might not have any issues at all, or you might get some random alerts.
it’s an extra few minutes, like 3-5 at most, but you’re not scrambling to make sure the car doesn’t wake up. Watch the tesbros console swap video, he was panicking the whole video that it would turn on.
Open all 4 doors, your frunk, your trunk and disconnect them. When all your new connections a made to the console (usb and canbus) then reconnect the HV battery first and then the 12v Negative terminal in the frunk.