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Hmmmm... pictures would help. Not sure what is "left" and "right" of the MX.
Gotcha, “left” on the MX is from the car’s chassis, “right” goes to the tuner. Have you measured voltage on the rectangular power connector for the MX? The MX3192 needs power as well.
it’s either the wiring is not done correctly, or something is wrong with the MX 3192. Of course it is easier to blame the MX3192, but nine times out of 10 I have found that the real problem is the simplest one… The wiring..... at least in my case.
That’s why it would be super helpful if you could attach some pictures of your actual set up that you wired.
Anyways, I can appreciate that you are probably frustrated at that point. Without those pictures, the best that I can tell you is that you should never ever ever ever ever trust those rectangular Mercedes power connectors that are at the Y. Never ever ever ever assume that those connectors are working properly. That is why I suggested that you measure the voltage that the MX3192 is receiving.
That’s a weird looking DIN cable w the black colored connector. Not sure if it matters but the only cables I have ever seen being used w Mercedes/Becker stuff have right angle cable ends.
It was the only one available at the time, I’d think it’s safe to say that other things wouldn’t work if it was not right.
I’m pretty bummed right now, put forth a lot of effort and money so far.
Grasshopper, playing with old cars builds character.![]()
I’m pretty bummed right now, put forth a lot of effort and money so far.
What year/model do you have, and what seat heater pad part numbers did you buy? These are NLA for the E500E/Sportline seats.Welp, just bought that MX-we’ll see what happens. On a different note, I picked up seat heater pads from MB, so that DIY will be in the future.

What year/model do you have, and what seat heater pad part numbers did you buy? These are NLA for the E500E/Sportline seats.
The main wire harness for heated seats is also NLA, so you'd need to source one from a car being parted out. I did this upgrade years ago on my '87 300D. Pics are on my website.
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Hmmm... do you have part numbers? On the standard seats, the heating pads are sewn into the leather/Tex upholstery covers. And I would have sworn those were NLA. There are 6 separate pieces per seat: 1 center and 2 side bolsters for the bottom cushion, same for the backrest.‘92 300E with standard seats. I have the harnesses already, and the console wood. The heater pads are still available from MB for about $45 a piece. I just need the time to do it now.

Hmmm... do you have part numbers? On the standard seats, the heating pads are sewn into the leather/Tex upholstery covers. And I would have sworn those were NLA. There are 6 separate pieces per seat: 1 center and 2 side bolsters for the bottom cushion, same for the backrest.
Ahhhh... got it. Those elements are designed for the early 124 seats, 1986-1989 USA model years. The upholstery/pads/etc are all different than 1990-up standard seats. There are also different part numbers for leather, Tex, and velours.Part number 0008202198; So far as I have researched, these will slip into the “fingers” of the seat pleating with some coaxing and cursing.


That should be relatively easy! Gotta be either in the EPC, or you could raid a junkyard to find a car with bun warmers. MB refers to the black plastic widgets as "pin bushing housings".I am having a hard time finding the plug that the pad pins insert into, pretty much hit a dead end as I cannot find a part number.

That should be relatively easy! Gotta be either in the EPC, or you could raid a junkyard to find a car with bun warmers. MB refers to the black plastic widgets as "pin bushing housings".
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From Ben's Whirled:You would think, not even the dealership could find the part number. I’ve dedicated hours to finding it so far.
Welp, just bought that MX-we’ll see what happens. On a different note, I picked up seat heater pads from MB, so that DIY will be in the future.
I have a pinout for the cable that goes between the alpine changer and the becker converter unit (Yes, it's the same 8 Pin cable as a standard alpine m-bus system, but they moved some of the pins around... they switched power and ground around among other things).

...the cd is more than likely plugged in wrong. There are two rt angle din plugs that plug into the translator and then into the 1432 tuner box. There are markings to make sure the are right gray to gray and black to black. The cd changer plugs into the translator via a din plug.
I don’t know whether I should love or hate you. You’ve found what I couldn’t with hours of searching, You have my sincerest thanks.
From Ben's Whirled:
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300e - Adding heated seats
www.benzworld.org
I remember now that I had to do bit of research to find those buggers (they are the same as on the headlight washer motor). And I just happened to be in the mood for sticking my nose into my parts and receipts.The housing: 009 545 52 28The back of the housing: 009 545 21 28The pins (4 for each plug): 001 545 38 26I'm pretty sure that those are all still available You'll have to solder the wires into the pins and then assemble it all. They're not too pricey.Greg
So I got another MX3192, wired, battery disconnected....head unit still does not recognize the unit. I’m again, at a loss. I’d hate to believe I have two bad MX’s.
Does anybody have a cable like this please? I would like to buy one. I have all the components needed except for this cable. I looked around and could not find any available. I also tried to make one but soldering in small spaces proved to be a challenge with my soldering tools (and skills). At this point my only hope is that either somebody may have one, or point me in the right direction to buy one. I am hoping somebody may be able to help.I'm amazed that the seller has three available. It just went down to 2 available and 1 sold.Putting this image here for posterity so that future folks know what this cable is all about:
View attachment 90846 View attachment 90849
Does anybody have a cable like this please? I would like to buy one. I have all the components needed except for this cable. I looked around and could not find any available. I also tried to make one but soldering in small spaces proved to be a challenge with my soldering tools (and skills). At this point my only hope is that either somebody may have one, or point me in the right direction to buy one. I am hoping somebody may be able to help.
Thanks,
Roy
Ok. Please private message me. I can help you out..... best that we talk on the phone.Thanks for your reply and intention, but it would not: that's a mini DIN, male at one end. The one I am looking for would be a full size DIN, female 8-pin at both ends with the two additional leads (+12V and ground) at either end. I am not interested in having the Becker 4-pin "Z" plug connected to the two leads, I can connect one.
I looked around for hours and could not find one or something that would work on Mercedes. I found the same but for VW and Volvo, but not Mercedes. I am hoping somebody here may be able to help.




www.makerspaces.com


Hah, compliment is accepted, thank you, but I'm just a big hack. Any time I wrench, it ends up in tears, breaking stuff, or $$$$ down the drain. Usually a combo of all three. Therefore I focus mostly on stuff that you guys haven't covered. Which is a very small universe. The depth of knowledge here is remarkably deep.![]()




Correct! The mx3192 gets power from the Z and the green circle in the picture below shows which end of the cable is connected with the Z (the alpine end).Thank you, @Jlaa . So, just to be clear:
1) The 12V is supplied only to one end. That's good, it makes sense.
2) I am assuming that the end which will have the 12V supplied is actually the end that will get connected to the Alpine. Would I be correct (the 3192 has its own power supplied through the "Z" connector)?

Thank you, I assumed that. The only surprise is that the power shows up at the opposite end of the Z connector's wires. Something to keep in mind when connecting the cable, if someone will ever find that cable...














No Idea if this helps --- but see here: changer adaptor - PeachParts Mercedes-Benz ForumWell, I just wanted to bring a little update on another solution to make the right cable:
1. Take the 20’ feet cable that came with the Alpine CD shuttle (if not buy one, there are few on EBay) and cut the end with the female to desired length. In my case I needed a little over 3 feet. The original Alpine cable of the unit is almost one foot long and it ends with a a male plug. The MX3192 connector is also a male. The idea is to make a cable that will connect DIRECTLY to MC3192 W/O any adapter AND will supply power to the Alpine CD shuttle.
View attachment 104829View attachment 104830View attachment 104831View attachment 104832
2. Open the Alpine up and disconnect its original cable.
View attachment 104833View attachment 104834View attachment 104835View attachment 104836
3. Splice it at the end to expose the wires. Below are the two cables.
View attachment 104837
4. Solder the wires from the new one to the same locations as the original cable.
View attachment 104838View attachment 104839
5. The final cable with the two leads for +12V and -12V I have not soldered the Z connector, but for a BUS cable is fully functional.
This is the second cable I made, on the first I ventured in soldering also the 8-pin female (operation that I will NOT do again).
View attachment 104840View attachment 104843View attachment 104844
I tested two cassette radios, two MX3192, I think two radio amplifiers, four Alpine CD shuttles (two apparently new ones) and one (used) Mercedes CD shuttle. I did so many tests in the last 4 weeks that I am starting to have a hard time remembering the exact details. However, all have something in common:
The fact that no mater what components I throw at it makes me wonder what am I missing? At this point I will wait for the Yatour with 8-pin connector to see if that would work. If that does, then I know is CD shuttles. If that doesn’t (which I am kind of expecting), I’ll see what I do next. I feel I had enough frustration with this. If anybody has encountered the same and fixed it please let me know what you did.
- Once the MX3192 is connected into the system, the radio makes the CD function available (but not operational until the CD is connected to the MX3192)
- After selecting the CD function, the “LOADING” message appears on the display and that’s how far it will go (for CD #1 it will say LOADING 01, for #2 it will say LOADING 02, etc.). It will not go beyond LOADING 06 (it knows it’s a 6-CD magazine). However, it will NOT play anything regardless of which combination of components I have connected.
- The above happens with ALL CD shuttles I have Alpine (2x CHM-S620, 1x CHM-S630, 5960) and one Mercedes



