I'm looking forward to make my own SCART switcher box, in a cheap way (I mean, under $20 cheap). I was messing around with some connections and found out that by connecting RGB (Pins 7/11/15) and Sync (Pin 20) cables I could get what I wanted for my consoles (Saturn and Dreamcast). I though about using a 18pin push button switcher and redirect RGB/Sync/AudioRL through the switcher, without any kind of electronics (just analog switching and outputting). Will it work without damaging my consoles? I know I have to ground pins 5,4,9,13,17,18 and I though about grounding them all together. I have no idea if I'm missing something here but I created a board to make the soldering easier (on KiCAD) but still not sure if only those 6 cables/pins will do what I want.
Thanks for you time
(I'm posting it again, since my first post seems to be lost somewhere, so excuse me If I sound simplistic or in a hurry).