sorry bout that go here for the PDF
http://www.soltronixstore.com/Detail.bok?no=5 oh yeah BTW i was just reading another thread where ground noise was a problem and someone mentioned shutting the amp down with the PwrSup this soft shutdown controller has a aux line built just for this reason also if your using a factory head unit with a FM mod you can diode isolate the switched and relay the AUX into the head units switched + to keep the radio on untill the computer shuts off