Use Joycon EXR and illumination lead to control brightness?
I'm planning an install on my brand new audi a3, so i wanted to keep things as OEM as possible.
One of the original radio's features is that it maintains the same screen brightness as the rest of the dashboard.
I have already purchased a Joycon EXR for steering wheel control, could I theoretically wire the car's illumiation lead to one of the Joycon EXR's channels and use that to control my screen brightness?
Or would it be easier to use a Fusion Brain??
What do you guys think??
Thanks a lot!