i want to connect a amp to a stock mercedes radio...it has connections for a phone tape and cd changer....but does it have rca juck inputs also?

The mercedes standard fit unit (bosch or becker make) do not have line outs for connection to a power amp.
you will need to buy a converter that connects to the rear speaker wires.
Do you realy need an amp? I have a mercedes c class with the same radio unit and it sounds super.

youll have to pull out the stereo and take a look at the back to know for sure, otherwise you can buy a converter which will hook up to the stereo then allow you to connect an amp. I think its called a Line Level Converter, Scoshe is a brand i can think of that makes it.