I have the original connection cable for my SNES (The one that looks like a cable TV wire), and I was looking into getting the AV (Red/Yellow/White) connecter cables for the system. However, after looking on Amazon, I noticed that the cables are noted as working with the SNES, the N64, and the Gamecube. I then used my Gamecube's AV cables with the SNES, and the system seems to be working fine (It actually has better image quality now). Will continued use of these cables harm the system in any way?