I should be expecting a new 7in double din touch screen unit this week. Now before i start i was just looking for some advice on what to do as far as the install without the gmos 6. I have installed plenty of aftermarket radios but never in a cadillac. After reading through some similar post's i realized its not all that simple. Now I understand that if i do not use the gmos6 adapter that i will have to keep my original radio installed in the car. So i figure i will run it to the trunk unless i settle for the glove box. So for me to install the new unit, will i just splice the wires and connect them onto the same lines already beeing used or what? And i do have the bose system and no need for onstar incase that may be a problem. Also what is it that i will be missing i hear the chimes will no longer work, does that mean for everything that chimes or just some?