The frame will be padded and the plugs will be stationary so all you have to do is slide it in and out.
The plug will go to a corded cassette tape which will be installed backwards so the tape will be stationary as well.
I'm wiring a female cigarette plug behind the dash to plug the charger into so no wires will be seen.
I'll be using a plug similar to a single one of these so the ipod charger's plug wont always be hot.