Bluetooth radio build.

So then, if I wanted to retain a radio function, how would I control it?
If you wanted to keep the radio functional I would do something else lol you. Could add a bluetooth board and wire it in with the existing wiring all you need to run bluetooth is 12 volts. They make boards like the one mike used that is just bluetooth and doestn have the volume knob and amplifier built into it. It would wire in with your existing radio. But I have no idea how to do that lol that's over my head that's why I went this route it was the simplest why I could figure out how to do it 12 volts and speaker wire.