Who knows the OEM Navigation very well.
 

I have come into a factory Navi hood which I am going to use to house my screen for a carputer. I've soldered it up to open close with the car or with the button, and the tilt works and buttons light up.

Currently the OEM screen is still in there. When the hood opens, the screen comes on, and when I turn the headlights on the screen dims...
These are good features, and I would like to be able to wire my lilliput to do the same. (turn on with the hood opening, and off when closing, and if possible, dim with the lights).

Does anyone know how to do any of this?

Search would turn up https://www.rx8club.com/series-i-interior-audio-electronics-24/oem-navigation-hood-retrofit-carputer-application-140504/page2/ has most all that you will need for this.