OneOfaKindTrini

KARO My car is prewired, I ran the VIN on EPC. The pre-wiring I believe is option code '387'.

W203E35

Sounds good, are there any close dealers around you? I got mine from the dealer. I know online you can find the more expensive iPod kit but the aux I've never seen online.

have you tried calling up getmercedesparts.com directly? A 210 440 50 05 64

Mercedeschick

In the original DIY post, it states to use pins 5,6, and 12. In the picture though, it looks like 6,11, and 12. are being utilized. Can someone please clarify for me please. Or am I looking at it wrong? I know nothing of audio electronics so I will be assembling mainly from what I see in the pictures. TIA!

ontmiss

11 common
6 left speaker
12 right speaker

matone2011

great DIY works great...i just got the CD ROM Cable and spliced it together with a female headphone jack...very happy with this mod only took me an hour to make the cable and install the cable...thanks

navyewo

First off Hello all,
Been a lurker here for about a year and finally decided to join the conversation. I am doing the Aux input install and have to admit this is the Step by step DIY I've seen. I do have a question though and hope someone in the know is still monitoring this thread. My wiring harness has connections where the DIY has the connections being made..... can I use the unused pins on the other side, above the 10A fuse or or these pinned out differently. I'll attempt to upload some pics to help explain. Has anyone else had this issue? Looks like I will have to load pics seperately....... I dont want to apply any power until I get some info

Thanks

anonymousmoose

I bought this cable a few weeks ago from an Indpedendant MB workshop for about $80AUD. They installed it, took them 5 mins, for gratis.

Funny thing is they couldn't product the invoice so I left without paying, they said I can. Then I went back to pay and still they couldnt find the original invoice. So a few weeks later and its still been free . Dont get me wrong, I want to pay them but their accounts are not managed well it seams.

matone2011

@navyewo what year is your car...the connection pins are in the back of the head unit...you may have the white connector in the passenger foot well. but this diy was very easy only took me 15-20 mins to install

navyewo

it's an 07, I checked for the factory installed cable, maybe I didn't look good enough. I've already built the modified cable and run everything. I think I will attempt to disconnect the wiring that is already in the place of where this DIY says to connect and see if I lose any functionality. if its just the prewiring for Aux then no harm no foul..... seem corect?

navyewo

Just a quick update.... I finished the project this morning and it works great!!! I'm assuming I had the preinstalled cable somewhere but I couldn't find it in the door sill or kickplate anywhere. I removed the connector that was connecting to the camber 3 position and replaced it with the modified CD ROM cable. I ran the cable down through the drivers side of center console and left the female plug barely visible beneath the center armrest/storage area. No cutting required this way, everything in simply tucked under trim/molding. Works great with my Ipod and Droid X. Also works well as hands free with the droid X using the phones Mic. and the car speakers. I used pins 6, 11, and 12 incase anyone is wondering. No hum and didn't use ground loop isololator. Thanks to all for the great info this board. Next project is changing the grill to one with the mercedes badge in it and going to a flat hood badge. Also planning a carbon fiber dash kit and maybe debadging..... any other reccs for an 07 C230 sport?

matone2011

thats great...glad you got it...i have an 07 c230 6spd...i want to change out my grille and go with a flat hood badge...i also want to do a carbon fiber or painted front lip and maybe some c63 wheels...then see what i can do to the engine.

whathedunk29

Hey everyone. I recently purchased my first car about 2 weeks ago, a 2007 c230 sport. Naturally I was led here when I searched Google after learning that I could not simply plug my iPod into an aux cable.

I ordered the cable harness this afternoon from one of those links someone posted.

I have yet to begin this project because I have yet to gather all the necessary materials. However I saw the step where we're instructed to solder the CDRom Audio cable to the harness cable.

Could someone please explain how exactly this is done... Also, i've looked for this cable online but the only ones I can seem to find are ones with 4 wires instead of 3 like the topic creator used.

I'll post more questions as they arise.


I greatly appreciate any and all help you guys can provide!


Thanks

whathedunk29

bump. is this forum dead?

voodoo2000

Hi,

I tried to find same solution for my car too. My car is w211_2007_ E 200 CDI. I know that this is not a C class but also i have Audio 20 Radio/CD sistem.

I don't know anyone tried too same solution to also W211 mercedes. I want to try it but my audio system doesn't pass to Aux-In when i hold on CDC button.

Differently, my car don't have CD changer. When i bought this car, ex owner take out this devices. Maybe becasue of this doesn't to pass to Aux-In mode.

Do you know somethig about this that it is possible or not to pass to Aux-in active mode if i dont have CD changer device. Because of i can't start Aux-In mode?

Thank you.

vas2vas

hello,
first off, many thanks for an excellent post!

just to add few quick notes, it is actually possible to buy a quadlock connector and solder a 3.5mm jack directly on to it... e.g. this: http://cdchangeremulator.com/connect...b/prod_65.html

or if you don't want to bother with soldering anything, you can buy a universal quadlock kit, e.g. this: http://cdchangeremulator.com/index.p...d&productId=67
and just insert the pins into the appropriate slots for the audio 20.

personally I build mine from scratch, soldering pins etc...

JimDrives

Just got a 2007 C230 W203 a few weeks ago and was happy to find this thread to be able to get an aux input. As I was doing my research I found this cool accessory called the iSIMPLE IS75 Polywire iPod Universal Cable on Ebay that lets me take advantage of the Apple connector for line output (fixed level) and also charges the phone. It even includes a parallel 3.5mm audio connector if I want to use a different device instead of the iPhone. I just finished installing it and it works like a charm! I followed these instructions, which were invaluable in the process (THANK YOU!), and routed the cable to the console storage box. It looks clean and sounds great.

harrison1277

beautifully crafted post

LAKIS1961

GREAT POST
I have done the cable for my clk200 2007 without the wire harness and it works great with my ipod nano. To remove and reinstall the audio20 hu it took just over an hour.I routed the cable through an existing prehole into the center console where my ipod rests.Two things, ground should go to pin 11,and take care for adjacent pins not to touch.During my installation pins 4 and 5 were touching resulting that the CD and RADIO were not functioning.

Great thanks

MBfinatic

GREAT wright up!

cmarc

I am thinking about buying the iSIMPLE IS75 Polywire iPod Universal Cable and using it for my car as well. Did you solder this wire to the CD ROM cable and followed through with the DIY?

JimDrives

Hi there,
I did solder a CD-ROM audio cable to the IS75 after removing its audio L/R RCA connectors. I followed this main post to find out where things were and how to get to them, but wasn't installing the Aux MB cable so much of it wasn't relevant for me. Once I got the dash apart, the only issue I found was finding space for the IS75 module but found a spot near the ashtray. I also tapped the IS75's power off of the nearby cigarette lighter power.
Hope this helps but let me know if you have any other questions.
Jim

cmarc

I appreciate the help!! I get the cable tomorrow so hopefully all goes well. I'll let you know how it goes and if I have any questions. Thanks again!

cmarc

Hi again,
I am just about to start this project, but would you be able to tell me what connections you soldered between the RCA cables and CD rom cables. Like which wires did you solder for ground in the RCA cable etc. I stripped the RCA cable and found wires followed by another insulated core. What do I do with the outer wires? Sorry, I am fairly new at this but am dying for an aux input in my car so your help is much appreciated!

Qu4rk

I am about 3 years late into the party, but wow am i glad i found this post. So i m signing up to say THANKS and show how i did mine too.

Like most 07 drivers, i was happy to get the facelift, but disappointed not only do we not get AUX, we don't even get the infamous white harness! At first OP's solution appears daunting, but i assure you, it's actually EASIER THAN IT LOOKS!!! And the best part, you can get ALL your supplies from the dollar store!!!!

I inquired about the harness cable at the local toronto MercStealership, and it was 72.50CAD + tax. But after some research, it looks like this cable is just a very expensive AUX cable... so stealing from others on this forum, i made my own cable from RCA cables. (you can technically make this cable using aux wires, but i already made mine by the time i realized...) The job is easy, and my high school electronics course finally paid off.

1.) find an old cd-rom audio cable. i stole mine from a local electronics recycling depot... and find a male to male RCA cable
2.) cut both in half, and strip away the insulations
3.) the RCA is going to have 4 lines, the red, white, and the ground on each red/white. the ground is the copper that is surrounding each of the red/white. Twist the two grounds together to form one wire, and space out your red/white/ground wire.
4.) strip the cd cable as well, and twist the two sets of cables together such that white - white, red - red, and black - ground.
5.) Get a soldering iron ($1.50 at dollar store) and solder each wire together, and then apply hot glue ($2.50 glue gun at dollar store) to not only protect the wires, but to add insulation. I know pros use heat sink and wire tubing... but i m just not that good... but i think glue gun works just as well.
6.) Test it! the best way to test is to open up your pc, plug that cd rom cable into your cd rom, and your RCA to your headphone using a RCA - 3.5mm audio adapter ($1 from dollar store). Put a CD into your computer, and set your computer to play analog audio http://support.microsoft.com/kb/266035
and set your windows media player to play analog audio http://support.microsoft.com/kb/306706

if everything is set up correctly, you should hear your cd playing from your headphones!

7.) take apart your head unit as described here:
https://mbworld.org/forums/c-class-w...tructions.html

8.) connect your audio cables to pin 5, 6, 12 and test your audio device. if your cable works, this should be perfectly fine too.

9.) for me, instead of taking out the glove box and doing all that.. i instead drilled a hole in the ash tray and led my wire out from there. That glove box removal looks like it is too much work.

10.) put everything back in place and you are done!!!!

11.) to-do for me... i m going to get a bluetooth receiver next from a friend. Once I have that, i should be able to get it to auto connect to my phone everytime i m in the car, and I would just use that to play music, without even taking my phone out!!!

Hopefully this helps anyone that is reading this and is still on the fence about doing it.

Total cost:
solder iron - $1.50
glue gun - $2.50
RCA - 3.5mm - $1.00
T-20 screw driver - $7.00!!! this was the most expensive thing i had to buy. I could return it now that i m done, but i m too happy about my dyi job to care..

Total cost: $12 CAD + tax















.... and yes... my C230 is in STICK too bad MB gave up on the stick business, you can't find a stick in any of the 2012 cars anymore...

paulwid

Hi - Did this mod on my 2007 C280. Works great. I did not buy the MB cable but rather a $5 aux cable and a CD-Rom cable for a dollar. So for $6 and about 2 hours of my time, I'm one happy camper.