Would someone be able to identify this four wire connector (red/black/green/white)? It's behind a blank panel on a wall adjacent to a light switch. I believe there's a second one in the wall cavity.
My guess would be that it's some proprietary connector for a 3-way switch where you attach all the wires to the connect then just plug it into the switch.
They could also be audio related - there are two speakers in the ceiling and when I bought the house the former owner said this is where the speaker wires were. There are also two wires on the outdoor wall between screws (that may have been for outdoor speaker mounts.)
In the wall cavity there are some Ethernet cables and other unidentified wires. If they're electrical wires I assume it's not to code given that there's no box containing everything.