I have an '01 accord coupe with tweeters in the front, 6.5's in the doors, 6x9's in the rear and 2 12's in the trunk. I replaced the OEM radio with my kenwood head unit and ever since there has been a scratching noise coming from the speakers. At first I thought the tweeters were blown so I took those out but now it is coming from the rear speakers. Bad wiring? Tweeters blown on the 6x9? Any help is appreciated thank you