I want to add a DVD player to the car and watch it on the COMAND monitor. That's not a problem as there are many on the market, all with the standard A/V jack input/outputs. However my car didn't come with the TV Module and I am told that I don't need the original Merc one and a 3rd party TV Tuner would do. Has anyone here ever done this retrofit and have recommendations for the 3rd party TV tuner ?

There's this site in the UK that claims to make them
http://www.carfi.co.uk/html/digital_tv.html

Thanks !