I am interested in adding bass to an existing Bose system on a Nissan Murano 2012 by replacing just the sub for a punchy bass. I am leaning toward amplified Bazooka because it has a fast release harness. It is strange to see 2 wired harness connected to the Bose sub at the spare tire. I was expecting to see at least 7 wires and wanted to ask questions about tapping it wires but it looks like I need know more info about the Bose system. I appreciate if someone can share info on Bose system. Thanks.