Playstation in Subaru WRX

So i just hooked up a sound system in the car head unit ,speakers ,subwoofer and i had this idea to see if i can hook up a playstation and view it in my head unit. So i hooked everything up and it just wouldn’t show on my screen. Turns out i needed a usb capture card got a good one on amazon and fixed that problem. Then when i turned it on i had no audio fixed that with some audio settings from the console long story short after a good inverter and a lot of plugging and playing i finally got it to work and run smoothly would love some feedback or any ways i could improve it!