Have a few of these cars where the on/off switch is inconveniently located on the underside of the boxcar's frame forcing you to access it by removing it from the track each time you want to "play" it or turn it off and also there's no way to control the volume of the music.
So my question is - is there a way to remotely turn the sound on and off utilizing tmcc? Does ERR make a module which could be retroffited into these cars for remote operation of both on and off and controlling volume too?
Have any of you modded a similar car for remote operation of on/off and contolling volume? How did you do it?