Hi guys, sorry if i'm beating a dead horse but i cannot find an answer to this question on any forums. I added an aftermarket stereo last week with a powered subwoofer & door speakers and afterwards wished it had a little more highs. So, i want to add some tweeters in the rear to round out the sound and when I hooked up the stereo I noticed that there were 4 pairs of factory wires on the car harness that my adapter plugged into so there must be a second set of speaker wires ran somewhere in the car. I don't know if it is prewired for rear speakers or not. If so, where would the rear speaker wires terminate? Any help would be appreciated.