Well, I am going to start experimenting on my 10.4 monitor to see if I can get it to auto switch to backup camera. Any ideas would be much appreciated.
More to come in the future.
It shouldn't be that hard. Momentary to latching relay. They make them so that when power is applied, it latches and does a momentary. When power is taken away, it clicks the momentary again. Hard part is having it click a few times to cycle through the inputs (maybe a series of relays that click in series?)