i already asked this in another thread and this is the best anwser i got so far
Originally Posted by mcernik
Well I ripped the trunk apart.
On the left side is what appears to be an amplifier.
On the right side is a small fuse panel.
There may be a switched power in that panel, I forgot to look, I was busy looking for some kind of harness to plug into but found nothing.
I talked to a service tech at my dealership this morning and he said they have really no info on the addon sub/amp package or even a service manual on the Camaro yet.
So for now it looks like the only way to do it is a Hi-Low converter off the rear speakers.