I am in the market for a new head unit. I am looking at the Pioneer. I am not a fan of DIY because I have zero finesse. I talked to the guy at the Car Audio and he said that I wont be able to use the standard Phone On/Off line buttons. I have a new 2014 WRX Sedan. Yet I see people saying that you can. So if someone can give me exact parts needed to install so I can show him and get an estimate that would be very helpful.