Finally got a chance to look around more. There is a coil of wires labeled at the right (driver side) front when I pulled out the drawer, just like the first picture. I'm guessing I would find one coil or the other, but not both?
Do I just need to hook that coil to my Zamp controller and confirm the connection at the battery? Or, are those wires the ones that are supposed to go to the battery, and the second picture is another coil I need to find for my controller?
I have the Zamp connected to a panel (was going to use it like a portable), but I like the idea of mounting it on the space that's already cut in the cabinet area.