VSS - 94 95 VDO speedo thread - Defender Source
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  #1  
Old April 14th, 2013, 09:45 PM
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VSS - 94 95 VDO speedo thread

So my VSS seems to be none functional. Or maybe it's the cables. After playing with it all day I'm done with the retro prince of darkness crap and want to put a VDO gauge in my truck.

After doing some open heart surgery on the vss ( josh can you post the photos? ) I found its a simple reed switch and magnet that basically switches a number of pulses to let the ECU know the car is moving or slowing down so it can start to control the idle.

Has anyone opened a YBE100540G to know its function? I imagine its the same ... It even has yellow and green wires same as the existing 94/95 type.

Please don't bother to tell me about hybrid cable systems ... I really have no interest in prolonging the abject misery that this crap is causing me.

I've tried to read the main VDO thread but its fragmented and confused ...

My plan is install a YBE100540G, run the wires direct to the ecu with no speedo and check that the ecu gets the right signal. If it does, tap the wire to send the pulse to the speedo.

Thoughts? Sponsorship? Anyone got an old YBE100540G?
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Old April 14th, 2013, 09:50 PM
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I can't add anything but this.


That's Artie Lang's Range Rover Sport next to us in the Holland Tunnel.
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  #3  
Old April 15th, 2013, 01:09 PM
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Is that an early headlamp?
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  #4  
Old April 15th, 2013, 01:19 PM
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The YBE100540 is also a simple proximity pulse sensor. It should work with the ECU. You just need to be careful to wire it in correctly with the VDO speedo. For the ECU, it is powered on one side and a pulsed signal on the other.
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Old April 15th, 2013, 01:23 PM
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I'll also add that YBE100540 uses the same electrical connector as one of the rear lights, the turn/running light (I think). The connector has three wires, but works properly with the two prongs of the sender.
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Old April 16th, 2013, 04:02 AM
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What exactly are you trying to do? I don't know what the YBExxxxxx is but I'm interested. Please post what you end up doing and how it turns out.
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Old April 16th, 2013, 04:12 AM
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Quote:
Originally Posted by Stmpede View Post
What exactly are you trying to do? I don't know what the YBExxxxxx is but I'm interested. Please post what you end up doing and how it turns out.
If I'm guessing right, you're replacing the cables and vss with this and that it's out of a '97? I am converting to vdo myself in my nas110 and would much prefer this solution to cobbling together a gm sender and a cable to create the pulse. Very interested to know more...

------ Follow up post added April 16th, 2013 03:15 AM ------

Quote:
Originally Posted by Stmpede View Post
What exactly are you trying to do? I don't know what the YBExxxxxx is but I'm interested. Please post what you end up doing and how it turns out.
If I understand correctly, this is out of a '97 and you are replacing the vss and cables with it. If this is the case I would love to know more as I am switching to vdo in my nas110 and would much prefer this solution to cobbling together my cable and some off-the-shelf gm sensor. Very interested to know more...
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Old April 16th, 2013, 07:52 AM
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Quote:
Originally Posted by Red90 View Post
I'll also add that YBE100540 uses the same electrical connector as one of the rear lights, the turn/running light (I think). The connector has three wires, but works properly with the two prongs of the sender.
It's the brake light connector using outside pins only.
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Old April 16th, 2013, 07:55 AM
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Quote:
Originally Posted by Stmpede View Post

If I'm guessing right, you're replacing the cables and vss with this and that it's out of a '97? I am converting to vdo myself in my nas110 and would much prefer this solution to cobbling together a gm sender and a cable to create the pulse. Very interested to know more...

------ Follow up post added April 16th, 2013 03:15 AM ------

If I understand correctly, this is out of a '97 and you are replacing the vss and cables with it. If this is the case I would love to know more as I am switching to vdo in my nas110 and would much prefer this solution to cobbling together my cable and some off-the-shelf gm sensor. Very interested to know more...
It's a disco part that has the same ECU as a 93/94/95 defender. The 97 is different and I'm not sure about compatibility.

What I want to know is how the disco speedo gets its signal.
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Soapy water / KY jelly, etc. is is basically a must. Yes, good idea to remove trim panels - only takes 5 more minutes to do so.
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  #10  
Old April 16th, 2013, 07:59 AM
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Jason, this is Artie Lange just a few hours after we saw him. The Gf found this, btw.

http://www.tmz.com/2013/04/15/artie-...njured-photos/
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Old April 16th, 2013, 08:01 AM
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I toyed with this for a little while but never followed it all the way through. I ended up installing a different cable after the VSS to a GM transducer that works great with the VDO. Total cost of the cable and sender was about $50. Like others have mentioned the VDO seems somewhat picky about its signal and VDO themselves were very little help when I contacted them but I may not have been asking the right questions
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Old April 16th, 2013, 10:12 AM
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Ok, thanks for the info. Hopefully someone can find out more about using this with the VDO...that seems like the ideal setup
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Old April 16th, 2013, 12:20 PM
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Quote:
Originally Posted by jefhuf View Post
I toyed with this for a little while but never followed it all the way through. I ended up installing a different cable after the VSS to a GM transducer that works great with the VDO. Total cost of the cable and sender was about $50. Like others have mentioned the VDO seems somewhat picky about its signal and VDO themselves were very little help when I contacted them but I may not have been asking the right questions
I think my current VSS is fubar and I'm not willing to spend more to polish the turd that is the moronic design of the current crap.
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Old April 16th, 2013, 01:01 PM
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Quote:
Originally Posted by leastonce View Post
I think my current VSS is fubar and I'm not willing to spend more to polish the turd that is the moronic design of the current crap.
I hear ya. I was actually in the same boat but up against needing an inspection so picked up a used unit from Will Tillery...that was about a year ago and you know what they say about temporary fixes!
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Old April 23rd, 2013, 01:29 PM
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Has anyone gotten anywhere with this? I can't seem to find it at the moment, but I found a Spec Sheet on VDO's site that tells you exactly what the outputs of their Speed Sensors are, so all we need to do is compare that with the output from the LR Sensor to find if they match or not. I'll post it up from home when I get there but I have no idea what the LR Sender puts out.
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Old April 23rd, 2013, 01:37 PM
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If I have time, I'll look it up when I get home. You hook up the sensor like stock to the ECU and take a single lead from the signal line to the speedo. You just need the correct pin on the speedo.
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Old April 23rd, 2013, 01:41 PM
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Quote:
Originally Posted by Red90 View Post
If I have time, I'll look it up when I get home. You hook up the sensor like stock to the ECU and take a single lead from the signal line to the speedo. You just need the correct pin on the speedo.
Are you confirming the LR Sender will work with the VDO Speedo, you just aren't sure of the Pin to use?
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Old April 23rd, 2013, 01:42 PM
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See attached. Pin 8, IIRC. You can also use pin 2 to supply power to the sensor instead of the ECU power if you want. It is probably better regulated.
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File Type: pdf VDO Speedometer.pdf (2.47 MB, 164 views)
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Old April 23rd, 2013, 01:46 PM
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Quote:
Originally Posted by Stmpede View Post
Are you confirming the LR Sender will work with the VDO Speedo, you just aren't sure of the Pin to use?
Sure. Lots of people use the sender with the speedo. If you are just using the sender, you go pin 7 and pin 8 with no power to the sender.

The ECU, though, needs a pulsed 12 V signal, so you supply power to one side of the sender and read the signal (pulsed 12V) from the other side to both the ECU and the speedo.
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Old April 23rd, 2013, 01:53 PM
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Thanks John, I just want to be clear, I can use the YBE100540G with the VDO Gauge and it will give a correct reading?
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