Adding subs to 03 Murano HELP!!!

I have a 2003 Nissan Murano with BOSE sound. I am trying to add subs and I am having problems. I have ran all the wires and my amp works but I am having trouble getting around the BOSE to connect my RCA wires.Where do I connect them?? I have A PAC adapter but I dont know Where to connect it.

when i added subs to my 04murano i had the power connected to a spare pre-run 30 amp power wire from battery conveniently placed in the cargo space, grounding obviously to body, i opened up the bose base box in the back and used the signal wires from there to hook up to the amp, and connected the remote wire to the back of the 12v outlet in the cargo space because there wasnt an available one on back of factory 6disc changer bose deck. That may not be the proper way to do it but it works, and im happy with it.