Installing a cd changer in a C class

[mboy]

I have a C class 2003 and I want to install a CD changer in the glove box.

Does any one know where I connect the power supply plugs from my cd changer to my stereo.

The optic fibre one is easy.

1st plug = two blue/black wires to a plastic plug with 5 round holes.

2nd plug = 5 wires: 2 brown,brown/red stripe, red/black stripe,blue/black.

I believe I have a audio 10 or 20 stereo, but I do not know where I should plug the two plugs from cd changer.

Thanks,

Regards,

Mas

 

[marnix]

Hi,
If it is a Audio 10.
At the back of the radio there are 3 sockets next to the 10Amp fuse.
The one next to the fibre optic socket is the power supply to the radio with the speed signal etc.
The one in the middle is the socket for all the speakers
The top one (slightly wider than the other 2) is the one where you need to connect the power lead coming from the CD changer.
If you already have a connector in there (as I think you will) it's because the radio is pre-wired for the CD changer. The other end of that cable should be located behind the glove box

 

[mboy]

CD Changer

I have had a look at the glove box and on the right side of the glove box is a slightly cut out area which I removed and found no prewired for the CD changer, is it possible that the wires and at back of the glove box and if so what is the best way to get to the wires.

Thanks,

Mas

 

[marnix]

The fibre optic wires are orange and there shoud be 2 of them attached to a black plug.
The power cable is shrouded in a black fabric (Linen) sleeve with a small black plug.
The best way is to look in the hatch with a torch to see if the orange wires are there and fish them out. Be carefull no to kink them as these are not copper wires.
If you can't see them, you may have to remove the radio and trace the wires to see where they are.
I have myself installed 5 or 6 of these for people and all the W203 so far where pre-wired (even the early ones).

 

[mboy]

Cd Changer

Thanks for your help.

So far I have removed the cd holder, which was on the right hand side. Then on the side panel I saw a slightly cut area (oval shape) I snapped it and found a empty space. I have used a torch to look at the back of the glove compartment and found no area that I can snap open.

I have tried to get to the back of the glove compartment by opening the underneath area, but I cannot.

Please could you let me know the best way to take out the stereo. The stereo has a insert underneath it for storing things.

Regards,

Mas

 

[mboy]

Cd Changer

When you have installed them do you have to remove the cd holder from the glove comparment and did you have to break the oval cut out area on the right side panel?

I believe you have described the cut area being at the back of the glove compartment, but I checked with a torch and there is no area to break out.


Regards,

Mas

 

[mboy]

CD Changer

I have already bought the power leads from Mercedes and one end goes into the cd changer and the are two plugs that come off it.

As you explained the plug with brown wires, but where does then other plug go the one with blue wires.

Regards,

Mas

 

[marnix]

You need to remove the panel as the wires need to come inside the glove box. The CD holder should fit next to the CD changer on the top shelf of the glove box,
The extra plug (blue wires) on your lead is not needed. It is just an extra power supply to feed any auxillary item you may have.
To remove the radio from the W203 is a little more complicated than on the earlier model.
This radio is now hold in place by 2 screws that are located behind the facia panel.
To remove the facia, you need to remove the ash tray. Behind the ash tray is a tork screw that needs removig this allowing to remove the facia panel.
Please check carefully as I dont remember exactly as there may be more screws to remove

 

[mboy]

cd changer

I had removed the ashtray but there are no screws there. Could it be that I need the the keys to remove the stereo?

Please see picture for what my stereo looks like.

Regards,

Mas

 

[marnix]

Hi,
On this model(BE6021) you no longer use the removal keys. At the front of the radio, on each side there is a lug that takes a screw to fix the radio to the car(right picture). The previous model was removable with the 2 flat keys(left picture).
You will need to remove the front facia to get to these screws as it is impossible to remove the radio otherwise.
I am sure there is a screw at the base of the facia panel.
I never had to remove the radio to install a CD changer on a W203 as all the ones I've come accross where pre-wired.
When you eventually get to re move the radio, dont worry if you disconnect the power supply as these units no longer have a code number.

 

[mboy]

CD Changer

Thanks, the information you have provided has been extremely useful. Thanks for taking the time to explain in such detail and taking me through the steps.

I think I will have to remove the stereo to check whether it is pre-wired because I have snapped out the retangler area on the side of the glove compartment and looked for the wires, but cannot find any.

Thank you.

Regards,

Mas

 

[arav]

Hi,
On this model(BE6021) you no longer use the removal keys. At the front of the radio, on each side there is a lug that takes a screw to fix the radio to the car(right picture). The previous model was removable with the 2 flat keys(left picture).
You will need to remove the front facia to get to these screws as it is impossible to remove the radio otherwise.
I am sure there is a screw at the base of the facia panel.
I never had to remove the radio to install a CD changer on a W203 as all the ones I've come accross where pre-wired.
When you eventually get to re move the radio, dont worry if you disconnect the power supply as these units no longer have a code number.

Hi, you don't need to remove any screws behind the ashtray. Place a thin bladed screwdriver where the arrows are in the pic, (i've used your pic mboy hope you don't mind) and carefully push the vent apart from the housing and swivel vent upwards until there is a small gap between the vent and housing at the bottom (see pic 2) shine a torch in there and you will see a small screw on the the left and right side, take this screw out (close the vents to stop the screw from falling in) then using the flat bladed screwdriver swivel the vents down so a small gap appears at the top. on the left and right side edge there will be some teeth, push these teeth gently downwards and pull teh vent out wards.
Open you ashtray about half way and the torch into the the bottom corners there will be a metal clip in each corner, take the screwdriver and insert into the recess of the clip and pull clip downwards, then pull the facia off. The radio will then come into view and you will see the screws holding it in place. hope this helps.

Marnix, I too am trying to install a cd changer and after about 2 hours searching I am still unable to locate the power cable for the cd changer, i bought the fibre optic cable from the dealers as i could not find this pre-wired either, any help you can give would be greatly appreciated.
Cheers

 

[marnix]

If you slide the radio out, you should be able to check if it has a cable connected where the green plug is. This is the fibre optic link.
If it is pre-wired, it should also have a connector in the top slot (power supply to the CD changer)
The other 2 are:
Bottom next to the fuse: Power, speed sensor and other things
Middle: speakers.
If there are no wires in the top slot and where the green plug is, then it's not pre-wired

 

[arav]

there was nothing in the green plug so i bought the fibre optic cable from the dealers. there is a black block with 2 brown wires in the top above the speakers block, would the other end of this be the power lead that needs to be connected to the cd changer?

 

[marnix]

It could be.
You need to trace it and see where the other end is

 

[Cdchanger]

Help Me

Hello I have in my W203 one Audio 10 and would want to connect a Mp3-Player second the outline of Arnie! but you say here that the pin behind they are various! how make I? I can connect on aux the player? It by force must have the cable in fibbra optical? thanks to all

 

[marnix]

Maybe this may be of help
www.beckerelectronics.com/1492.html

The connector C only has pins 1-6 (on back of radio)
As the CD Changer only uses 2 of these the others must be for any AUX you want to add.
A car audio electrician or shop should be able to help you

 

[Cdchanger]

Thanks For all.........

OK, Let's try again......

Socket A (bottom):

Viewed from the back, numbers are

____________________________
|                                       
|    |1     |3     |5     |7        
|                                       
|                                       
|    |2     |4     |6     |8        
|________________________________|

1 Speed signal (GAL)
2 Reversing lamp signal
3 Telephone mute / clearing function
4 Permanent positive (terminal 30)
5 Control output for automatic antenna/amplifier
6 Illumination (terminal 58)
7 Switched positive (terminal 15)
8 Earth (terminal 31)


Socket B (Middle)
Viewed from the back, numbers are

__________________________
|                                       
|    |1     |3     |5     |7        
|                                      
|                                       
|    |2     |4     |6     |8        
|_______________________________|

1 Loudspeaker rear right +
2 Loudspeaker rear right -
3 Loudspeaker front right +
4 Loudspeaker front right -
5 Loudspeaker front left +
6 Loudspeaker front left -
7 Loudspeaker rear left +
8 Loudspeaker rear left -


Socket C1 (Top left)

_____________...
|
|   _1       _4
|        _3      _6
|   _2      _5
|____________...

1 LineOut rear left
2 LineOut rear right
3 AF earth
4 LineOut front left
5 LineOut front right
6 Subwoofer LineOut

Socket C2 (Top Middle)

 .. _______________...
  
    _7       _10
         _9       _12
    _8       _11
 .. _______________...

7-12 Special connection for Becker CD changer


Socket C3 (Top right)

 .. _________________________
                                   
    _13       _16      _19   
         _15       _18         
    _14       _17      _20    
 .. _________________________|

13 AF telephone input
14 Earth - telephone input
15-17 Special connection for Becker CD changer
18 CD AF earth (AUX)
19 CD AF left (AUX)
20 CD AF right (AUX)

I must use its optical D2B out?
I can use pin the 18,19,20?
If I use pin the 18,19,20 I must make in order to make to go the unit in cdc?