I've had to pull out the ignition switch on my 1992 300D to replace the vacuum switch for the engine cutoff.

However, the plug S2/2 came apart and I don't know where the wires are supposed to go. Sheesh, what a pain. It's the wiring plug at the back of the ignition switch that connects all the wires to the ignition.

I've looked in the FSM and the ETM and haven't been able to find the colors of the wires in that plug and their positions. Searched on line too. Nothing, Nada, Niente, Niks, Zero.

Anybody maybe have a haynes manual and maybe they've got it in the there? There's 2 red wires, Green/Pink, Yellow/Pink. Picture attached. Or maybe you know where to find it in the FSM or ETM?

Grrr....

Attached Thumbnails

 

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1983 240D Silver/Blue "Sadie", unknown miles. 100k miles on WVO single tank, converted to 2 tank about 10k miles ago, FPHE, Injector Heaters, Aux Fuel pump. Alcohol/Water injection. Frantz oil bypass filter
1992 300D 2.5 Turbo Green/Tan "Jade" 267K miles Stock.
1992 300D 2.5 tan/tan "Rocky" on 2 tank WVO. Pressure actuated Turbo "rat's nest" surgery completed. 197k miles

Cancel that! I just found it. Didn't delete this post in case someone else has the same problem. The wiring colors are in the diagram on page 105/1 of the ETM in the Power Distribution section. So if you're looking for the wiring of the s2/2 glow/starter switch on the back of the ignition stem on a W124 300D 2.5 Mercedes that is where to look.

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1983 240D Silver/Blue "Sadie", unknown miles. 100k miles on WVO single tank, converted to 2 tank about 10k miles ago, FPHE, Injector Heaters, Aux Fuel pump. Alcohol/Water injection. Frantz oil bypass filter
1992 300D 2.5 Turbo Green/Tan "Jade" 267K miles Stock.
1992 300D 2.5 tan/tan "Rocky" on 2 tank WVO. Pressure actuated Turbo "rat's nest" surgery completed. 197k miles

Ok, disaster! Put it all back in and now it is on when the key is out or in the OFF position. With the key in 1 or Run or Start all the electrics are off, but the starter starts.

Either I fried the starter switch (forgot to unplug the battery and stuck a screwdriver in it) or I have put the wires back in the ignition wrong. I'm hoping for the latter, obviously...

Any ideas?

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1983 240D Silver/Blue "Sadie", unknown miles. 100k miles on WVO single tank, converted to 2 tank about 10k miles ago, FPHE, Injector Heaters, Aux Fuel pump. Alcohol/Water injection. Frantz oil bypass filter
1992 300D 2.5 Turbo Green/Tan "Jade" 267K miles Stock.
1992 300D 2.5 tan/tan "Rocky" on 2 tank WVO. Pressure actuated Turbo "rat's nest" surgery completed. 197k miles

I'm having a nice time here on this thread... Found the correct wiring in case anyone is looking for it too at

http://www.peachparts.com/shopforum/showthread.php?t=28159&highlight=w124+ignition+wiring

red wires = term #30
violet wire = #50
pink/red = #15
pink/green = # 15x
pink/yellow = #15R
green/white = #P30

Thanks to M.B Doc

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1983 240D Silver/Blue "Sadie", unknown miles. 100k miles on WVO single tank, converted to 2 tank about 10k miles ago, FPHE, Injector Heaters, Aux Fuel pump. Alcohol/Water injection. Frantz oil bypass filter
1992 300D 2.5 Turbo Green/Tan "Jade" 267K miles Stock.
1992 300D 2.5 tan/tan "Rocky" on 2 tank WVO. Pressure actuated Turbo "rat's nest" surgery completed. 197k miles

Yep, me again...

Got it fixed. Not sure quite how, but in taking the switch itself apart and testing the connections in the different positions against the circuit diagram it seemed it was all cockeyed. I noticed it could be put back in one of two positions, so I put it back in the second position and whaddya know, it worked. Even the missing spring back from START to RUN came back.

Weird thing is it was working before but just not with the spring back. Anyway, works perfectly now.

Lovely chatting....

Bye from me to me...

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1983 240D Silver/Blue "Sadie", unknown miles. 100k miles on WVO single tank, converted to 2 tank about 10k miles ago, FPHE, Injector Heaters, Aux Fuel pump. Alcohol/Water injection. Frantz oil bypass filter
1992 300D 2.5 Turbo Green/Tan "Jade" 267K miles Stock.
1992 300D 2.5 tan/tan "Rocky" on 2 tank WVO. Pressure actuated Turbo "rat's nest" surgery completed. 197k miles

PD,

Thanks,
(Somebody in the future will thank you also.)

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'84 300SD sold
124.128

It's like those future grapes from a Pratchett book where you get the hangover the morning before you drink the wine. To the future person, you're welcome.

Today is random comment day...

__________________
1983 240D Silver/Blue "Sadie", unknown miles. 100k miles on WVO single tank, converted to 2 tank about 10k miles ago, FPHE, Injector Heaters, Aux Fuel pump. Alcohol/Water injection. Frantz oil bypass filter
1992 300D 2.5 Turbo Green/Tan "Jade" 267K miles Stock.
1992 300D 2.5 tan/tan "Rocky" on 2 tank WVO. Pressure actuated Turbo "rat's nest" surgery completed. 197k miles

it didn't take long.....


THANKS!!

I had the same problem today. I love the forum!

Hi i have a 1992 E class 190d mercedes and when i was removing the igntion switch to replace it with a new one, the plug got dismanteled and now i have the wires hanging and dont know where each wire goes.

On the barrel there are pin codes which are:
P30
15
30
15X
30
50
15R

The wire colours are as follow:
RED / BLACK (THICK WIRE)
RED (THICK WIRE)
RED / YELLOW (THICK WIRE)
RED (THICK WIRE)
PURPLE / WHITE (THICK WIRE)
RED / GREEN (THICK WIRE) & RED / GREEN (THIN WIRE) - ON ONE CONECTOR PIN!
GREEN / WHITE (THIN WIRE)

Please advise me as to which wire goes into with pin code.
You may also reply to me at efthivoulos_elia@hotmail.com

i solved the problem.... the combination is as follows:
P30 - GREEN / WHITE (thin wire)
15R - RED / GREEN (thin & thick wire together)
50 - PURPLE / WHITE
30 - RED
15X - RED / YELLOW
30 - RED
15 - RED / BLACK