MBWorld.org Forums

S-Class (W221) 2007-2013: S 320 CDI, S 350, S 450, S 500, S 550, S 420 CDI, S 600

M278 wiring sockets change.

     
Old Aug 12, 2022 | 01:16 PM
Share
  #1  
Timo Schroeder's Avatar
Timo Schroeder
Thread Starter
Member
Liked
Loved
Community Favorite
 
Joined: Apr 2022
Posts: 200
Likes: 40
Class S 500 M278
M278 wiring connector change.
M278 - I have to change some of the wiring harness connectors, to the ignition coils and the injectors, as they are very fragile and brakes into pieces.

Can someone please help me with information ther to buy new connectors ?

Good day and happy weekend.
Last edited by Timo Schroeder; Aug 12, 2022 at 03:37 PM.
Reply
0
Old Aug 15, 2022 | 12:10 PM
Share
  #2  
konigstiger's Avatar
konigstiger
Out Of Control!!
 
Joined: Jul 2003
Posts: 15,901
Likes: 4,630
From: North Scottsdale, AZ
'71 Pinto
Connectors not referenced/shown in parts any part #s stamped anywhere.
Reply
0
Old Aug 15, 2022 | 12:16 PM
Share
  #3  
Timo Schroeder's Avatar
Timo Schroeder
Thread Starter
Member
Liked
Loved
Community Favorite
 
Joined: Apr 2022
Posts: 200
Likes: 40
Class S 500 M278
Originally Posted by konigstiger
Connectors not referenced/shown in parts any part #s stamped anywhere.
Thanks - meaning it's not possible to get new ones?
Reply
0
Old Aug 15, 2022 | 12:19 PM
Share
  #4  
konigstiger's Avatar
konigstiger
Out Of Control!!
 
Joined: Jul 2003
Posts: 15,901
Likes: 4,630
From: North Scottsdale, AZ
'71 Pinto
At least not from MB.
Reply
0
Old Aug 15, 2022 | 12:21 PM
Share
  #5  
Timo Schroeder's Avatar
Timo Schroeder
Thread Starter
Member
Liked
Loved
Community Favorite
 
Joined: Apr 2022
Posts: 200
Likes: 40
Class S 500 M278
Originally Posted by konigstiger
At least not from MB.
Woooo - sounds not good.
Reply
0
Old Aug 15, 2022 | 12:22 PM
Share
  #6  
konigstiger's Avatar
konigstiger
Out Of Control!!
 
Joined: Jul 2003
Posts: 15,901
Likes: 4,630
From: North Scottsdale, AZ
'71 Pinto
See attachment.
Attached Files
File Type: pdf
Parts_Information.pdf (119.4 KB, 197 views)
Reply
0
Old Aug 15, 2022 | 12:30 PM
Share
  #7  
Timo Schroeder's Avatar
Timo Schroeder
Thread Starter
Member
Liked
Loved
Community Favorite
 
Joined: Apr 2022
Posts: 200
Likes: 40
Class S 500 M278
Originally Posted by konigstiger
See attachment.
Grand - thanks for your help.
Reply
0

Trending Topics

Old Aug 15, 2022 | 12:52 PM
Share
  #8  
Timo Schroeder's Avatar
Timo Schroeder
Thread Starter
Member
Liked
Loved
Community Favorite
 
Joined: Apr 2022
Posts: 200
Likes: 40
Class S 500 M278
Originally Posted by konigstiger
See attachment.
Just a question - if I can get a brand new wiring harness number A 278 150 31 20 - could that be great?
Reply
0
MB World Stories

The Best of Mercedes & AMG

story-0

6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

 Verdad Gallardo
story-1

Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

 Verdad Gallardo
story-2

Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

 Verdad Gallardo
story-3

8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

 Verdad Gallardo
story-4

Flawlessly Restored Mercedes 190E Evo II Heads to Auction

 Verdad Gallardo
story-5

Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

 Verdad Gallardo
story-6

Mercedes EQS Gets A Major Update: Everything You Need to Know

 Verdad Gallardo
story-7

5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

 Verdad Gallardo
story-8

Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

 Verdad Gallardo
story-9

10 Most Reliable Mercedes-Benz Models You Can Buy Used

 Verdad Gallardo
Old Aug 15, 2022 | 01:48 PM
Share
  #9  
konigstiger's Avatar
konigstiger
Out Of Control!!
 
Joined: Jul 2003
Posts: 15,901
Likes: 4,630
From: North Scottsdale, AZ
'71 Pinto
Yes need to replace harness connectors are not available separately from MB. Shop 2781501620, 2781503120, 2781504720, 2781507720 used or 2781503120, and 2781507720 new - all compatible.
Reply
0
Old Aug 15, 2022 | 01:58 PM
Share
  #10  
Timo Schroeder's Avatar
Timo Schroeder
Thread Starter
Member
Liked
Loved
Community Favorite
 
Joined: Apr 2022
Posts: 200
Likes: 40
Class S 500 M278
Originally Posted by konigstiger
Yes need to replace harness connectors are not available separately from MB. Shop 2781501620, 2781503120, 2781504720, 2781507720 used or 2781503120, and 2781507720 new - all compatible.
Thanks you're my hero 😌 - good day.
Reply
0
Back to Subforum
S-Class (W221)
View Next Unread
Persistent P2421 and P2422 Codes

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 

Thread Tools
Search this Thread
Search this Thread:

Advanced Search
Rate This Thread
Rate This Thread:
You have already rated this thread Rating: Thread Rating: 0 votes, average.
Show Printable Version
Email this Page

Advanced Search

All times are GMT -4. The time now is 12:03 PM.

story-0
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

Slideshow: Not every Mercedes design becomes timeless, some feel stuck in the era they came from.

By Verdad Gallardo | 2026-05-12 18:09:07


VIEW MORE
story-1
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

Slideshow: Yes, Mercedes built manual cars, and some of them are far more interesting than you'd expect.

By Verdad Gallardo | 2026-05-02 12:36:58


VIEW MORE
story-2
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.

By Verdad Gallardo | 2026-04-29 11:19:28


VIEW MORE
story-3
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

Slideshow: Before curves took over, Mercedes mastered the art of the straight line, and some of those shapes still look right today.

By Verdad Gallardo | 2026-04-25 12:05:49


VIEW MORE
story-4
Flawlessly Restored Mercedes 190E Evo II Heads to Auction

Slideshow: The 190E Evolution II shows how a homologation necessity became a six-figure collector icon.

By Verdad Gallardo | 2026-04-22 17:53:47


VIEW MORE
story-5
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

Slideshow: Mercedes is turning one of its core nameplates electric, and the details show just how serious this shift is.

By Verdad Gallardo | 2026-04-21 13:58:06


VIEW MORE
story-6
Mercedes EQS Gets A Major Update: Everything You Need to Know

Slideshow: Faster charging, longer range, and a controversial steer-by-wire system define the latest evolution of Mercedes-Benz EQS.

By Verdad Gallardo | 2026-04-15 10:35:34


VIEW MORE
story-7
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

Slideshow: These overlooked Mercedes-Benz models never got the spotlight, but they quietly delivered more than most remember.

By Verdad Gallardo | 2026-04-13 19:35:45


VIEW MORE
story-8
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

Slideshow: A well-used 1991 Mercedes-Benz 300D with more than one million miles is now looking for a new owner, and it still appears ready for more.

By Verdad Gallardo | 2026-04-10 10:05:15


VIEW MORE
story-9
10 Most Reliable Mercedes-Benz Models You Can Buy Used

Slideshow: From bulletproof sedans to surprisingly tough SUVs, these Mercedes models proved that the three-pointed star can go the distance.

By Verdad Gallardo | 2026-04-08 09:55:49


VIEW MORE