I just bought a 2006 ram big horn. Are all rams equipped with mds or not. I can't tell because im not driving it yet it was a rollover that im fixing up. Also there is a bracket in the back of the cab that sticks up over the rear window anyone know what that is?

 

I was told mds from 06 and up

 

MDS is on 2006 and up 1500's, except Mega Cabs.

I'm not sure what you mean by bracket. On the back of the roof near the rear window there is a black plastic thing which is actually the satellite radio antenna. Is that what you mean?

 

Do you have a picture?