I have a 2007 gmc sierra crew cab with rear audio controls, onstar and steering wheel controls and boss factory radio and have an avicz100bt comin in on sept 9 i would like to keep factory speakers in and just add amp and subs so im trying to find the right conversion cable to hook up to the pioneer and find out if the amp on the factory boss is in the radio are hidden under dash for rest of speakers? Any Ideas..
Thanks
Chad