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94 sl 320
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1 Posts
Discussion Starter #1
Looking for the best place to buy a starter/alternater wiring harness. thanks in advance. Tim
 

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Y2K SL500 Silver
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8,660 Posts
Looking for the best place to buy a starter/alternater wiring harness. thanks in advance. Tim
Always use your VIN when ordering p/n's online.

p/n 1405406932 , engine harness $493.28 w/ S&H
p/n 1295409906 , electrical cable $733.40 w/ S&H
p/n 1295401830 , battery cable $105.50 w/ S&H
p/n 1295402130 , positive cable $58.58 w/ S&H

for OE check pricing at Parts.com then go to eBay>Search "r129 wiring harness sl320" to see if you can get what you want.
 

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91 500SL, 93 600SL, 95 S600 coupe, 97 S320, 99 ML430, 2003 CL600, 94 SL600, 97 Kawasaki 1100 STX
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135 Posts
I rewire those with military grade cables for $175 plus shipping. Just recently fixed oil pressure sender harness on, new to me, 91 500sl. Oil pressure sender is part of started harness. Usually, main thick power wires are OK but little wires to oil pressure sender, oil level sender, starter, and alternator insulation falls apart and short with each other. I had that harness fail on one of my cars and my alternator diodes failed in tunnel between NY and NJ. I made it out the tunnel on battery but it's no fun. Another S500 I had wiring failed and burned cluster.
You need to address it ASAP with either new harness or rewire it.
 

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1994 SL320
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22 Posts
Always use your VIN when ordering p/n's online.

p/n 1405406932 , engine harness $493.28 w/ S&H
p/n 1295409906 , electrical cable $733.40 w/ S&H
p/n 1295401830 , battery cable $105.50 w/ S&H
p/n 1295402130 , positive cable $58.58 w/ S&H

for OE check pricing at Parts.com then go to eBay>Search "r129 wiring harness sl320" to see if you can get what you want.
Which one of these harnesses contains the MAF sensor plug?
 

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1995 SL320, 1995 SL500, 1998 C280, 2004 E500 4matic
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1,004 Posts

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1994 SL320
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22 Posts
Definitely not the last two... Your best bet to double check with the dealer, but you maybe looking for this:

https://www.ecstuning.com/b-genuine-mercedes-benz-parts/mass-air-flow-connector-with-harness/1405400081/

Still, I would check with the dealer by VIN... As even for main harness on SL320 there are 3 variations...

Regards,
D
I've looked into this too, but I'm looking for the main harness that connects this to the ECU.... I've checked my VIN with my local dealer but they came with a component that would only fit the facelift SL320s but not mine. Mine's a 1994 SL320 VIN is WDB129063-2F-099197.
 

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1994 SL320
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22 Posts
Always use your VIN when ordering p/n's online.

p/n 1405406932 , engine harness $493.28 w/ S&H
p/n 1295409906 , electrical cable $733.40 w/ S&H
p/n 1295401830 , battery cable $105.50 w/ S&H
p/n 1295402130 , positive cable $58.58 w/ S&H

for OE check pricing at Parts.com then go to eBay>Search "r129 wiring harness sl320" to see if you can get what you want.
Is 1295409906 the harness with the MAF sensor plug? Do you have a photo of this harness and any idea of where to order this?
Thanks so much!
 

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1995 SL320, 1995 SL500, 1998 C280, 2004 E500 4matic
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1,004 Posts
Is 1295409906 the harness with the MAF sensor plug? Do you have a photo of this harness and any idea of where to order this?
Thanks so much!
It seem to be one of those illusive pieces, and leads me to believe after looking at much of what's out there - the part ECS showing maybe the only option, rewiring that section...

As to 1295409906, I did find the this page spread of diagrams with associated parts (many variations), and all for SL600 according to the site:

Mercedes-benz | iAUTO.lt

Regards,
D

P.S. See if you can find what you are looking for among these diagrams:

http://www.iauto.lt/mercedes-benz/Car/SL_320_USA_468/ELECTRICAL_EQUIPMENT_AND_INSTRUMENTS_20193
 

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1994 SL320
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22 Posts
Update - I finally figured out the part number and its 129 540 49 06 -

However it's been discontinued by MB and I can't source them from my local dealers. I've googled and I see autopartmaster.com and lincospares.com have it in stock. Have anyone bought from these sites or have any recommendations to buy this? Many thanks!!
 

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1998 SL500 Sport
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160 Posts
Ofcourse the are discontinued as they were rubbish. The updated harness came with new p/n
Dealer should be able to give a p/n to the updated part
 

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1995 SL 320
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65 Posts
Looking for a wire harness for starter pn 1295402130. I have looked all over and can pay and arm for it. Any suggestions on fixing it myself or finding a used one?
 

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1995 SL 320
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65 Posts
I decided to just to refurbish my harness. Already got the fittings off, I just need to find some quality wire.
 

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1995 SL 320
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65 Posts
Do you have any pictures of the process you could share? Soon will need to do the same on my 95...

Regards,
D
I don’t have pics.

My harness had four wires attached to the connector by ecm. 1- alternator 2 and 3rd to starter and 4th oil.


The alternator wire clips in the fitting. I didn’t replace it just it pulled off.
The main connection can be opened and the pins can be removed. Make sure you record which pin went where. At the other end the connections can be opened and the pins can be removed.

The easiest way I found to do this is to get your soldering iron hot and remove one wire/connection at a time and the put in a new wire in the pin then reheat and if need add more solder if needed. I did one wire at a time.

I would try and keep the wire sizes to match what you take off.
 

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