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1999 s420 combination relay (N10) wiring diagram?

22K views 16 replies 8 participants last post by  Mike'smerc55  
#1 ·
My combination relay just went out, and when trying to install the new one I accidentally released all the pins in the wiring harness (photo attached). Does anyone have a wiring diagram or can someone with the same car share a photo with the configuration of the pins?
Thank you!
 

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#2 ·
I did the same thing but I put it all back in as they did not spread as in your picture. I have an S320 so I am not sure if we have the same pins? I think we should. I am going to be visiting the junkyard this week and I will see if they have the relay there so i can take a really good picture. If not, I will take my relay out and try to send you a picture of my wires and how they are connected.
 
#3 ·
#7 · (Edited)
Gabriel,

I have been in your shoes with the N10 module, and the removal of the connectors does not look logical anyone can figure out.

Now, what I have learned is the diagrams are not accurate by any stretch of the imagination, and those Russian diagrams are Chilton Diagrams from the USA.

What I have learned from the N10 wiring is from one year to the next on the same model one(and series-early-mid-late) make no difference. You can be looking at a 97, and the 99 is totally different.

My best suggestion is just wait for someone here to photograph their N10 of the same year, and same model.

You can find the diagrams from this site, but you have to take several steps to view the diagrams, and they cannot work with a tablet or mobile phone as you need to save, download, and upload-That is what it takes-That is what I do to get the most accurate diagrams not these lame Chilton diagrams...

http://benz.ehost.tj/

A)The link will redirect you-accept it.

B)I do not know how it is done with other browsers, but use FireFox with uBlock Origin add-on.

C) Select WebETM with Star Finder

D) For you I THINK !!! It is 82-Electrical Systems Body

E) Windshield Wiper System

F) When you click on the 82.3-U-2000XZ number you will get this page with this heading at the top showing Diagram/Legend/Diagnostics/Connector/Star Finder, and the page will say A plugin is needed to display this content. You will go blue in the face before you find the plug-in. This site has been like this because all they have done is copied the actual Mercedes Service CD's, and the CD is like this too.

G) The simplest work-around.

1)I have found is to look at the HTML elements of the page by right clicking on the center of the page, and selecting Inspect Element.

2)In the element you want to go about half way down. You will see a line with a line that starts with Frame name= dwf content on that same line you will see http:// link, and it will end in html.

3)You want to copy that link, but the easy way is copy the whole line, so right click on that whole line(it will highlight and select Copy Outer html)Copy the link on Firefox browser address bar, but do open a new tab, so you do not mess-up the page you are on.

4)Change the html extension to dwf extension(A CAD file extension) while you are there delete the quotes and the greater-than symbol(These are the symbols ">) . By changing the extension and deleting the quotes, and everything in front of the http. Then hitting enter you will be prompted to save the file.

5)Save the file where you want, but organize them in a folder as that is what I do.

6) Go back to the page where you exposed the html elements, and close the elements. A tool-bar will be below the actual web page. If you follow the tool-bar to the far right will be an X, hover the mouse over it, and it will say Close Developer Tools. Click on the X to close it.

7) Now lets convert this dwf file to something you can use!! :smile

8) Go here to upload the dwf file to convert it to PDF:

https://www.coolutils.com/online/DWF-to-PDF#

One-click on +Select Files it will prompt you to look in your computer for this file. Select From Local Computer

Two-Blue bar will move from left to right. Meaning file was uploaded.

Three- On step three will say Get converted file select Download Converted File

Four - their you have your readable schematic diagram

9) Yes that was a pain, but life is just not that easy. it is not easy for me, but I have the GRRRRRit to punch through it is who I am. I have been doing it like this for years.... You must do this if you want to look at the connector diagram too...

10) Lets get back WebETM. Legend will help with the ID of the parts on the schematic. The Diagnostics will help with the diagnostic test procedures, but under the column Conn./Plug/Pin that will show the pin-out. The most significant integer is the connector, so the integer changes it means another connector. The "." separating means the next info is the pin number(the decimal in most cases). The same will exist at near the top of the schematic. The connector designated by a large number outside the connector, and the traces(or wires) pointing to the module will show the pin number.

11)The flat arrows at the connector pointing up/down/up-down means the flow of information.

12)The letters on the traces mean color of the wire, and those numbers on the traces mean diameter of the wire, but do not quote me...

Yes, it takes grit to figure this out, but it works, and I'd take this over having to deal with a non-working car... One has to DIY, this is one of those DIY's for information. Nothing comes easy in this world...

Hope it works out. I did my deed for the day back to some repairs

Martin

PS.. I've cheated and uploaded the N10 diagram, but my goal(here, and anywhere) is for you to find it not for me to do it for you...
 

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#11 · (Edited)
Yes, the Starfinder would be the source to trust.

Sorry for indicating that you should look at the N57, the convenience module
diagram. We had a discussion about that a while back.

The better one would be;
http://www.autolib.diakom.ru/CAR/Mercedes-Benz/1997/S420/SYSTEM WIRING DIAGRAMS/6406.pdf

It has the same colors/pins for all connections to the C1 connector (the one with 21 pins, where only 1-7 and 15-21 have pins on the module).

You have now got these "confirmed" (with a combination of the above);

1 Red (1.5, thickest wire)
7 Brown
15 Grey/Yellow
16 Black

But, what about the other pins on C1? 6 are missing.
Yes, its probably best to wait for someone to photograph theirs, as Martin says (thanks for the recipe, BTW).

But;
We have now covered the Wiper part (actually, it just the wiper switch and the washer
motor that on C1, wiper motor is on the C3) of the N10 (15 and 16) + the power/ground (1 and 7)

What other systems would be connected?

Defogger;
http://www.autolib.diakom.ru/CAR/Mercedes-Benz/1997/S420/SYSTEM WIRING DIAGRAMS/6362.pdf
18 Brown/Red
19 Green/Blue

What would be the others?

Edit;
By Martins excellent method, I found (do not trust the colorization done
by the converter...);

Defogger;
Image

http://www.pvv.org/~syljua/merc/w67292000xz.pdf

Hasard;
Image

http://www.pvv.org/~syljua/merc/w82102200xy.pdf

The last 4 pins missing would then be for the Hazard system;
(slightly puzzled, as its 5 pins in the drawing, but that might be related
to the number of blinker lights (on fenders or not)?)

2 Black/White (1.0 thick)
3 Black/Green (0.5 thin)
4 Black/Yellow/Green (0.35 thinner)
5 Grey/White/Violet (0.5 thin)
6 Black/Green (1.0 thick)

Are you then able to route all wires? The Black/Green ones would be the ambiguous ones,
I think.

BTW, there are very few changes after MY1997. The only three 1998 changes
are related to; BAS (brake assist system (new system in 1998)),
DAS (drive authorization system) and interior lights.

None for 1999, as its really just a MY1998 made late 1998 for the US market.

BTW2;
I did seem to have a way of correctly convert the dwf and the associated colors
back in 2008, but I cannot remember how..;
Image


br,
syljua
 
#12 ·
Thank you so much both Martin and Syljua!
Thanks to you guys I was able to install the new relay!

The problem i have with the instument cluster and blinkers/hazards/dome light not working still persists, but i am not able to check voltage across fuses and am also taking out the instrument cluster and checking that ground as well :)
 
#16 ·
My combination relay just went out, and when trying to install the new one I accidentally released all the pins in the wiring harness (photo attached). Does anyone have a wiring diagram or can someone with the same car share a photo with the configuration of the pins?
Thank you!
Hi Gabriel, did you ever work out the wiring configuration as I have done exactly the same thing with my 21 pin connector plug and I do not know where to put the wires? I have a W140 model year 1994 S320. Kind regards, Mike.