Connectors under passenger seat (non-JBL)

there are two connectors under the passenger seat of my 07 with standard 6 speaker system (non-JBL), does anyone know what they are?

I'm going to install a Boss Bass600 subwoofer under the passenger seat and need a place to tap into the ACC line of the stereo head unit to turn on/off the subwoofer, but i want to find a way without tearing into the back of the radio. So are those two connectors related to audio?

For the high level speaker input I will tap into the rear right speaker using the connector behind the trim panel in the B pillar under right seat belt, can this be done without splicing wires?

thanks!