Ok so I'm pretty new to replacing factory units so if this question has already been answered, sorry. I have a 2005 cobalt with the pioneer sound package and I recently bought the Pioneer AVH-P3100DVD head unit. I hooked everything up with the wiring harness and all of the speakers work fine except the 2 tweeters mounted by the side mirrors. They just put out static. I went back and checked all my connections and they're all fine. Any suggestions?