Sorry, I have a w203 200 cdi and bought an Android radio. and I have some problems
I tried to get answers from some professionals but I think the different opinions did not lead me to anything, so I repeat the question of the Android radio (brand Isudar) that I have installed but not with total satisfaction and that is due to poor reception (I assume some antenna connection.
So: In the photo below is the wiring that fed the previous radio (Audio 10 - Becker). From what I've seen, on the net the pins that contain the connection are: 2,3,4,5 and 8. The plug in the Android radio, where that link has the same five pins but in different order: 4,5,6,7 and 8. In turn the Android radio only takes advantage of pins 4 and 8, joining, two of the other three that are connected to nothing but isolating the 5 and which has an "ANT" ID.
The installed radio (Android) has everything working (with the defects related to the commands on the steering wheel and already described), but the worst, for now is the capture of the radio that is constantly looking for signal.
Since the insulated wire marked "ANT" is not connected to anything, I assume that the antenna does not have amplification and so I ask who knows
What are the pins 2, 3 (a 5 is described as ... for antenna and the others are the connection to the battery and the mass);
Pin 5 passes current to the radio or only receives current when the radio is connected to the antenna amplifier.
Advance grateful