just installed an aftermarket single din radio in my 03 cavalier. pretty sure all the wires are connected correctly. im not using a connector adapter. i had to hard wire them directly because previous owner cut it out. anyway, front speakers work, just no rear speaker action. i check the fader and balance, and the rears are very low compared to fronts. my guess is the stock amp is not turning on? the blue/white wire from aftermarket radio is not connected which should be for remote amp turn on signal. i had no place to connect it to. where does this wire go if its needed? google says it should go to a pink wire, but i dont see any pink wires back there. any suggestions?