ok .i ll try and explain.
this is not by passing the bose amp in-fact its retaining it and just improving the signal as required.
pretty straight forward to do.you ll need to cut the rca leads off about an inch above the plug exposing the wires ie.white and black and purple and black green and black greey and black.then strip back and match these to the h/unit loom speaker wires.you need to remove the plug from the h/u speaker wire loom....join them together ie purple to purple ,black / purple and black and so on with the others.white to white and black to white/black,green to green and black to green and black,grey to grey and black to grey and black.
hope this help.and you will not need the booster packs but you ll need ear plugs