Sony receiver in an ML
You will have to add a new antenna. I added a Sony MP3 Player to my 2002 ML320 and had the same problem.
For AM radio all you need to do is add a wire to the existing car antenna. That is make a Y adapter. Attach the common to the Radio. Attach one end of the Y to the car radio antenna for FM. And attach a wire to the other end of the Y for AM. Then fine a nice place to hide the wire.
Good Luck,
Steven---
No Brackets required. The Cut out is exactly a double DIN.
The Sony Radio came with a Metal Sleeve that was a perfect fit and the Plastic pocket also had adapters that made the install a piece of cake.
I spent more time installing the new Polk speakers then I did installing the Radio!
Steven
The antena in the car is great for FM but I yet to have the time to figure out how MB did the AM anternna in the car.
For now I have run just a piece of wire which works great.
Steven---



