I'm currently in the research/planning phase of building a car pc. I plan on keeping the factory head unit and was wondering if anyone has ideas of how to use the steering wheel controls for both the head unit and car pc. Atm I'm thinking of using the JoyCon, but I, would like the controls to switch between the head unit and car pc when the aux input on the head unit is selected (the car pc will be feeding its audio to the aux in on the head unit). Any suggestions or advice?