Cammy

I've searched and searched but can't find much if anything at all. I have a '14 FX4 eco with sync reverse camera with factory sony sub. I need a diagram to install a new sub and woofer. Anyone have a link to one or any advice on the subject? Im not wanting to splice and my friend and I are a little worried tearing into these new pickups (worried about resistors and all that since installing a sub in a 15 chevy where its cutting sound to rear factory speakers).
Thanks,
Cam