Just bought new subs and an amp for my car, I use the stock cd player(head unit) and I also want to add an aux cord while ive got my cd player out. I created a picture of my plan. I circled the part im iffy about, wouldnt I need a diode or would this work? (Ignore the colors connecting the line output to the cd player)
https://gyazo.com/635e32432f9f4990664769a4f3a99bfd
https://gyazo.com/635e32432f9f4990664769a4f3a99bfd
