Yes Polkatronron, that is correct. The coax connector in the outside storage compartment next to the steps also connects there.
In the overhead compartment where A/V equipment is, remove the cover where the coax comes through and also pull the AC outlets. This gives you more room to get your hand back there.
I also replaced the existing crappy dvd surround system with a Sony 5.1 receiver and separate dvd player. If your interested, I'll post photos of my install. Also, reply if you have more questions.
Rod & Carla B.
The Hounds Kooper & Abby
2015 Sunseeker 3010; '14 Ford Focus toad