M4m1x1.....Left auxiliary fan connector.....................................................................................B.1/4...........17
M4m2x2.....Right auxiliary fan connector...................................................................................B.1/4...........17
M4x1.........Left auxiliary fan connector.....................................................................................B.1/4...........18
M6/2x1......Left headlamp wiper motor connector.......................................................................B.1/6...........26
M6/3x1......Right headlamp wiper motor connector.....................................................................B.1/6...........26
M6/4x1......Rear window wiper motor connector.........................................................................B.1/12..........59
M10/3x1....Left front power window motor connector .................................................................B.1/7...........34
M10/4x1....Right front power window motor connector................................................................B.1/7...........34
M10/5x1....Left rear power window motor connector...................................................................B.1/7...........35
M10/6x1....Right rear power window motor connector.................................................................B.1/7...........35
M14/1x1....Supply pump voltage supply connector (central locking system)....................................B.1/8...........37
M14/1x2....Supply pump control line connector (central locking system).........................................B.1/8..........37
M14/1x3....Infrared remote control line connector......................................................................B.1/8...........37
M14/2x1....Supply pump voltage supply connector (central locking system/orthopedic backrest)........B.1/8...........37
M14/2x2....Supply pump control line connector (central locking system/orthopedic backrest).............B.1/8...........37
M14/2x3....Infrared remote control line connector......................................................................B.1/8...........37

 

S4x1........Combination switch connector....................................................................................B.1/10.........48
S8/2x1.....Warning buzzer contact connector (exterior lamps/central locking system).........................B.1/10.........46
S10/1x1....Left front brake pad wear sensor connector..................................................................B.1/9...........42
S10/2x1....Right front brake pad wear sensor connector................................................................B.1/9...........41
S40x1.......Cruise control switch connector..................................................................................B.1/8...........39
S62/1x1....Left front door switch connector (ATA).........................................................................B.1/8...........36
S62/1x1....Left front door switch connector (ATA).........................................................................B.1/8...........38
S62/2x1....Right front door switch connector (ATA).......................................................................B.1/8...........36
S62/2x1....Right front door switch connector (ATA).......................................................................B.1/8...........38
S68/1x1....Left front seat belt buckle switch connector (seat belt extender/reminder).........................B.1/8...........40
S68/2x1....Right front seat belt buckle switch connector (seat belt extender)....................................B.1/9...........43
S68/3x1....Left front seat belt buckle switch connector (airbag/ETR)...............................................B.1/8...........40
S68/4x1....Right front seat belt buckle switch connector (airbag/ETR)..............................................B.1/9...........43
S86/1x1....Left front door lock switch connector (convenience).......................................................B.1/9...........44
S87/1x1....Right front door lock switch connector (convenience).....................................................B.1/9...........44
S88/2x1....Trunk lid lock switch connector (convenience)...............................................................B.1/9...........45
Y3/1x1.....Valve block connector...............................................................................................B.1/6...........27

 

X1/4.....Automatic antenna connector.........................................................................................B.1/5.......25
X4/1.....Terminal block (terminal 30, interior)...............................................................................B.1/10......49
X4/10....Terminal block (terminal 30/terminal 61 battery) (3-pole) (except model 124.034/.036............B.1/1.........1
X4/10....Terminal block (terminal 30/30U/61e/87L, 6-pole) (Model 124.034/.036................................B.1/7........31
X6........Terminal block (terminal 58d) (2-pole).............................................................................B.1/10......47
X11.......Diagnostic connector/terminal block (circuit TD) Model 124.034/.036....................................B.1/7........33
X11/4....Diagnostic connector (diagnostic trouble code, 16-pole) (USA) (except model 124.034/.036.....B.1/1..........3
X11/4....Diagnostic connector (diagnostic trouble code, 16-pole) (Model 124.034/.036........................B.1/7........32
X12/3....Terminal block (terminal 15/15 unfused) (3-pole)..............................................................B.1/1..........2
X18.......Interior/tail lamp harness connector (8-pole)....................................................................B.1/10......49
X20.......Stop lamp switch connector (2-pole)................................................................................B.1/10......50
X21.......Stop lamp switch multipoint connector.............................................................................B.1/3........11
X22/1....Transmission overload protection connector (3-pole)..........................................................B.1/1.........4
X23/3....Soft top/interior connector (14-pole)................................................................................B.1/11......53
X23/4....Roll bar/power windows connector (2-pole).......................................................................B.1/11......51
X23/6....Soft top harness/soft top limit switch connector (4-pole)....................................................B.1/13......62
X24.......Headlamp harness connector (6-pole)..............................................................................B.1/1.........5
X26.......Interior/engine connector (12-pole).................................................................................B.1/1.........5
X27.......Starter harness connector.............................................................................................B.1/5........24
X30.......Accessory equipment connector block..............................................................................B.1/5........23

 

X42/11.....Harness connector (tailgate) (3-pole).........................................................................B.1/12.........58
X42/17.....Anti-theft alarm starter/starter lock-out connector (2-pole)............................................B.1/13.........61
X42/18.....Anti-theft alarm starter lock-out connector (6-pole)......................................................B.1/13.........63
X43.........Anti-theft alarm connector (central locking system) (3-pole)...........................................B.1/5..........22
X49/1......Backup lamp switch connector....................................................................................B.1/13.........63
X49/2......Backup lamp/starter lock-out switch connector..............................................................B.1/13.........63
X53/5......Hall-effect sensor multipoint connector (vehicle speed signal).........................................B.1/5..........21
X62/8......Rear axle multiple circuit junction connector.................................................................B.1/11.........52
X64.........Blower regulator/interior harness connector..................................................................B.1/2............9
X64/4......Dual auxiliary fan connector (2-pole)...........................................................................B.1/4...........18
X81/4......Engine, chassis/cruise control/electronic accelerator connector (8-pole)............................no figure found
X88/5......Left front brake pad wear sensor connector..................................................................B.1/9...........42
X95........"CHECK ENGINE" malfunction indicator lamp connector...................................................B.1/9...........41

 

Info for this thread came from here:

 

*.7

 

*.8

 

Hyperlinks go to pages that look like this:

 

Done. Let me know of errors, omissions, corrections...
Hope it becomes useful.

 

WOW

 

Thank you for the time and effort you put into this which will help many (including me) for sure!!!

 

Thank you very much for your work. It is very much appreciated:bowdown:

 

WOW!! Good job! Dare i say fair effort!

Soooo... like.... anybody know which plug/wires do i need to tap into to install my alarm lock wire and unlock wires to?

thanks for reading my post

note: 260e 89

 

What a useful thread...Looking for it so long...

Very useful thread...Many thanks

 

Thank you very, very, very much!!!

 

great job! Thanks for sharing

 

you probably should point out which engine this is for, as different W124's with different engine families are going to be considerably different with the details.

 

many thanks for the effort and useful links. thanks again.
but what about one for w124 111engine, am in the DRC and finding help and spares very difficult.

 

Is that the 1.9 to 2.2L inline 4? afaik, that engine was never sold here in the US in a E class (W124), instead we got the 260E and up.

anyways, that info should be all available from Mercedes via the EPC and maintenance manual CDs and so forth, but the W124 maintenance library I have doesn't include any M111 motors at all, just M103 and M104, various diesels, and V8s.

 

Wonderful work, and greatly appreciated. Thank you!
@moderator: Shouldn't this be a "sticky"?!

--Chris