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ways to put w124 speedometer work whith 6 speed gearbox
PedroFerreira Offline
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#1
ways to put w124 speedometer work whith 6 speed gearbox
hello,can some one tell me what´s the way to put speedometer working whith 6speed from w203?
11-09-2016, 01:39 PM
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firen456 Offline
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#2
RE: ways to put w124 speedometer work whith 6 speed gearbox
Hello,

use the speed sensor from the diff with a speedohealer V4. I got issues with the signal of the sensor and solved it by converting the sensor signal to a square signal with a lm1815. It works great now. With the speedohealer you can adjust vour tach signal from -99.9% to 9999,9%.
11-10-2016, 08:53 AM
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hansdampf Offline
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#3
RE: ways to put w124 speedometer work whith 6 speed gearbox
Hi firen,

could you give more information of how to connect the lm 1815. I have a speedo healer v4 in connection with a german device the converts a wave signal into a square signal. Deppending strongly on the the temperature (the colder, the better it works …) the speedo (w126) falls back to zero at max 170 km/h …

I think the signal converter I have does not wotk right. 

Should be 4 wires. +, ground signal-in and signal out … right?

Please help me out,

how do I connect the lm1815?



cheers from munich

hansdampf
01-10-2017, 12:59 PM
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Tobulus Online
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#4
RE: ways to put w124 speedometer work whith 6 speed gearbox
I know that problem. The speedometer is built to work with an inductive sensor, square signal input doesnt work above a certain frequency.
01-11-2017, 09:07 AM
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firen456 Offline
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#5
RE: ways to put w124 speedometer work whith 6 speed gearbox
Hi,

in the LM1815's datasheet there is a circuit explained which works well. 
There's a german whatsapp group i want you to join Smile   Just PM me...

Max
01-13-2017, 02:49 PM
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Gelubelea Offline
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#6
RE: ways to put w124 speedometer work whith 6 speed gearbox
Better conditioning the signal with NCV1124 or MAX9924

Gelu
01-15-2017, 08:24 PM
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hansdampf Offline
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#7
RE: ways to put w124 speedometer work whith 6 speed gearbox
(01-15-2017, 08:24 PM)Gelubelea Wrote: Better conditioning the signal with NCV1124 or MAX9924

Gelu

Maybe you are so right as many ways lead to rome …


Hi firen,


thx a lot for helping me out so much.

That was bad ass ….

I was so enthusiastic about your work, that I forgot about … Angel (HX 40)


Sevus fo Minga und bis zum nexscht´n moi, Du gacher und wuida Hackler!!!


dei
Andi
02-03-2017, 04:20 PM
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PedroFerreira Offline
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#8
RE: ways to put w124 speedometer work whith 6 speed gearbox
hello someone can help me instaling the speedohealer?
02-03-2017, 06:50 PM
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firen456 Offline
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#9
RE: ways to put w124 speedometer work whith 6 speed gearbox
Measse Smile oiwei wieder gern...

  
In the attached pictures you can see where to take and how to modify the signals. Dont't ask me where you can find which wire exactly. I Don't know. The ABS-Sensor is plugged under the rear seats and the ABS control unit can be found behind the Battery in W124.


   
02-04-2017, 09:27 AM
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PedroFerreira Offline
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#10
RE: ways to put w124 speedometer work whith 6 speed gearbox
firen i send you pm
02-04-2017, 01:15 PM
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PedroFerreira Offline
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#11
RE: ways to put w124 speedometer work whith 6 speed gearbox
can i conect the speedohealer directly to abs sensor?or i whill nedd the amplifier?
02-04-2017, 05:57 PM
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JoeB Offline
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#12
RE: ways to put w124 speedometer work whith 6 speed gearbox
There are several threads on this. please use the search function.

If you want to use a hall-effect sensor then use the v4.
For information use:
https://www.healtech-electronics.com/products/sh/

If you MUST use an inductive sensor (diff/abs) then you need the special SH-V4-2W version.

 SpeedoHealer special models

   
02-12-2017, 03:04 AM
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PedroFerreira Offline
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#13
RE: ways to put w124 speedometer work whith 6 speed gearbox
Joeb if i use SH-V4-2W dont have to use lm1815? is just plug and play?
02-12-2017, 11:11 AM
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JoeB Offline
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#14
RE: ways to put w124 speedometer work whith 6 speed gearbox
Correct.
02-12-2017, 07:48 PM
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