Well, cant return the sweet, sweet Pioneer 4500Nex, spent too dang much time trying to integrate a nice include everything Metra and I tried a idata mastero harness just to find out I ain't waking up that bose amp. Power constant, Alternative RAP, and duh ground are no Brainers. Gents, how about some help, using the Bose speakers and a good after market radio..... 40 watts per 4........ IE, going GM wire per wire out past that silly Bose amp.to the Bose Speakers? Mono block amp and DS18 6 inch sub is on its way........ GM upfitters is only so good. I have crossovers for 3/4 and 2 inch tweeters. How much power can the factory Bose speakers take? Used to rock at 3/4 volume and it was OK for factory. Granted aint no 3 way MB Quarts and Kicker solobarics...... but still ain't bad for family.road trips 2011 Tahoe LT, Bose, onstar, XM, non-nav, non rear seat DVD.