Pre-Facelift headlights to Facelift headlights wiring?
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Joined: Jun 2021
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w204
oh ok mate, and do you remember the color of those two wires for parking signal? ( I can see there are two brown wires coming from the car) would they be for parking signal? Also did you get parking lights faults when you finished rewiring? my issue is everything seems to be working as they should and when i turn on the ignition everything is good but when i switched off the ignition two parking light (left&right) faults appears on the dashboard! as I didn't use any capacitors yet and that's where i need your help if you can :-) did you install the capacitors to your parking signal wires and did that solve the faults issues on the dashboard? so i wanna use the capacitors for parking (lights) signals to get rid of the faults on the dashboard keeps appearing :-((
Best Regards mate.
Best Regards mate.
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Joined: Jun 2023
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2010 C300
Need help
Also, from the 10 pinout plug on our car, you can see the following:
2009 Plug
1 - (brown wire) - Right wheelhouse ground point
2 - (yellow wire) - Right Low Beam
3 - (white wire) - Right High Beam
4 - (gray/white wire) - Right front standing and parking lamp
5 - (gray/red wire) - Right front standing light 2
6 - (black/green wire) - Right front turn signal lamp
7 - (black/blue wire) - *not sure*
8 - (green/blue wire) - *not sure*
9 - (brown wire) - Right wheelhouse ground point
Any of the brown wires can splice with the negative ground points you need. Then match up the Low beam wire from the headlight to the #2 (yellow wire) on the car. Match high beam wire from headlight to the #3 (white wire) on the car. Match the #6 (black/green wire) to the turn signals. Match the #4 and #5 wires to the "C" LED or parking lamp. That's it, easy as pie.
2009 Plug
1 - (brown wire) - Right wheelhouse ground point
2 - (yellow wire) - Right Low Beam
3 - (white wire) - Right High Beam
4 - (gray/white wire) - Right front standing and parking lamp
5 - (gray/red wire) - Right front standing light 2
6 - (black/green wire) - Right front turn signal lamp
7 - (black/blue wire) - *not sure*
8 - (green/blue wire) - *not sure*
9 - (brown wire) - Right wheelhouse ground point
Any of the brown wires can splice with the negative ground points you need. Then match up the Low beam wire from the headlight to the #2 (yellow wire) on the car. Match high beam wire from headlight to the #3 (white wire) on the car. Match the #6 (black/green wire) to the turn signals. Match the #4 and #5 wires to the "C" LED or parking lamp. That's it, easy as pie.
2010 c300 my wire harness has 9 wires. I found 2013 wire harness from junk yard and i took it to do a 2010 facelift headlights conversion. Can you help me. Also do i need resistors to not have any codes. My 2010 had fog lights. Where do i connect the new led lights too and my new face lift bumper i do not have the left and right marker lights. Need help with wiring to get everything working with no codes.
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From: Milwaukee, WI
2010 C300 4MATIC........ 2011 C63 AMG.............. 2015 CLS400 4MATIC.....
Here is picture of facelift halogen headlight plug.
FROM LEFT TO Right: Turn Signal -> LED DRL -> GROUND -> High Beam
Bottom Row: Low Beam
You must cut your prefacelift harness off and wire manually, directly to this using plugs or replacing the harness. A prefacelift C63 harness will work.
Matching Wires:
Turn Signal: Yellow with Black Stripe:
Brown Wires: Ground
White wire: high beam
Yellow wire: low Beam
Light blue (gray) wire + all the other small wires connect to LED DRL
Last edited by Adi-Benz; Jun 25, 2023 at 10:48 AM.
Newbie
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Posts: 1
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2011 c300 sedan
2011 c300 wiring trouble
Hey i have a 2011 c300 sedan with the stock hids, car was in an accident so i got the newer hood and amg style front bumper and aftermarket 2012 headlights. The cars plugs driver side has 14 pins and passenger side has 10 pins as for the aftermarket headlights have only 8. How can i rewire this to make them work? Any help is appreciated thanks!
Last edited by Jonasmercedesc3; Jan 3, 2024 at 04:45 PM.
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2009 mercedes c300
Help with headlight on 2009 c300.
I have 2009 c300. I'm converting it to a 2013 c300 halogen headlight. Can you give me the wiring diagrams for both so I can fit the new plug to the new headlights please.
dusty_celica@hotmail.com
dusty_celica@hotmail.com
Last edited by dustycelica; Jan 31, 2024 at 09:10 AM. Reason: Because I can't find a way to send email to a member for help
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2009 mercedes c300
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w204
Hello. 14 pin to 9 pin ILS facelift
Hello. my car has nfl bi-xenon, 14 pins. I want to switch to a facelift, they have 9 Ils pins. I connected them but the main beam doesn't work at all, the "c" goes off and on, and the signaling goes on 2 times, then it gives me an error. can someone help me please? email: tudosasimi@yahoo.com
Senior Member
Joined: Mar 2013
Posts: 420
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From: NC
W204
I am unsure how you wired it up, but my recommendation is this, use a 12V battery to figure out which wire on your headlight energizers the low Beam bulbs. Once you figure this out, then connect it to your car's low beam wire and make sure that works first. Then you repeat this process for all of the bulbs you're trying to get working.
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w204 c350
14 to 10 pins
can you tell how you to connect 14 to 10 pins?
Last edited by Ayanski; Aug 30, 2024 at 02:42 PM. Reason: Wrong text
Newbie
Joined: May 2025
Posts: 1
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C class 2009 w204
I can't remember for sure which wires, because I didn't even bother re-using that plug. I just cut the wires and used universal plugs. What I do remember is that you have two (2) wires for parking signal on the plug coming from the car. On the headlights, there's only one (1) wire for parking signal. I just wired all these together. As for the capacitor, what are you trying to use it for?
hello there , I need some help I am retrofitting on my w204 2009 pre facelift from halogen to bixenon , I have a person that can do the coding for me but I need the diagram for the rewiring ! I’m not going to use the washers or level sensors I just want the headlights swap and make it work , thanks in advance I would really appreciate any help
