I have a 12" CAB in a ported box and CAB 1600.1 amp from my last car. I have delayed installing them as I wouldn't use it much, but there just taking up space in the garage and I'm not impressed with my HK system ('15 Challenger Hellcat). Is this a simple plug and play on this car? I read a couple threads where people talked about some electronics functions not working after stereo work. If I just tap into the Sub wire for the input can that mess anything up? Thanks in advance.