I just bought a new audio set up for my truck but I was wondering what some of the wires on the stock stereo were for. I havnt gotten into it yet so Im not completely sure but I know that there are two plugs that go into the back of the stereo and I know one of them is for the power for the stereo and the speakers, right? but what is the other plug for. I plan on pulling everything apart today amd start on the instalation but I just was wondering. Is the other plug for the tweeters and if it is how will I plug those in with the new stereo that only has one plug.