My "Dashboard"

I don't see any wires, how do they communicate with the ECU? I like the look too.
 
I don't see any wires, how do they communicate with the ECU? I like the look too.

Thank you. My cell phone is on the left using a GPS speed app and the other is a Garmin Nuvi 3590 with a Bluetooth EcoRoute HD OBD2 module, which I copied from Member Bob R.