Hello, I have a 94 Z28 Camaro. I bought a Pioneer DEH-X9500BHS head unit and would like to install it this afternoon. Currently there is a Kenwood aftermarket Head Unit (The one with only a CD receiver) that was there when I bought the car. My question is, do I have to re-wire anyhing or will it simply be just unplug the kenwood and plug in the Pioneer? I know it's more to go from stock to aftermarket, but what about aftermarket Kenwood to aftermarket Pioneer? And if you have any tips I would love to hear. This is my first time doing any wiring in a car or any audio stuff. Thanks.