Fitting VDO Speed Sender - Defender Source
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  #1  
Old July 8th, 2010, 12:37 PM
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Andrew J. Hutton
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Fitting VDO Speed Sender

So, I traded a speedo cable for a VDO hall-effect sender as I'm going to be fitting an Autometer speedometer to the 110 (hopefully soon) but what arrived doesn't seem to match up with what is coming out of the speedo drive housing on the transfer case. The sender has a nut on it that implies the other end should have a male thread. Can anyone enlighten me on what I'm missing to connect this up?
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  #2  
Old July 8th, 2010, 03:37 PM
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??? I think most people use stock LR senders. Either from a Disco 1 or from a TD5 Defender. These fit straight up and can be free used if you know the right people.

I did not know Autometer did a 4" speedo. What gauge are you getting?

http://members.shaw.ca/red90/maingauges.jpg
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  #3  
Old July 8th, 2010, 05:37 PM
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You just need the hall effect sender... I will post the part # later when I get home...
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  #4  
Old July 8th, 2010, 05:45 PM
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Tony Lawson
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I believe there is a thread that covers this. You still need a stock speedo cable - it is then shortened and converted (usually by a speedo shop) to mate with the VDO sensor.
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  #5  
Old July 8th, 2010, 06:45 PM
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You can also use a speedo cable from a CJ-7 automatic, with a 7/8" female sender unit. It's just the right length to put the sender in the dash behind the speedo. I used an autometer sender in mine.

-Hans
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  #6  
Old July 8th, 2010, 07:02 PM
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Easiest way is to get rid of the entire cable... THen just replace it with YBE100530 Its a stock rover part... You will also need a 3 pin plug from a NAS rear brake light. RN sells them. Not sure of the # off hand.. Post it if ya know it...
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  #7  
Old July 8th, 2010, 07:41 PM
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I couldn't find the number but they have plenty of them listed on Ebay UK. I looked under "defender light connectors".
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  #8  
Old July 8th, 2010, 07:41 PM
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Oh, wait, you guys are talking about Diesel trucks, aren't you?

Ignore me, and my previous post, as that really only applies to NAS trucks.

-Hans
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  #9  
Old July 8th, 2010, 10:07 PM
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Quote:
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Oh, wait, you guys are talking about Diesel trucks, aren't you?

Ignore me, and my previous post, as that really only applies to NAS trucks.

-Hans
Im talking about any truck.... That sender works fine on an NAS truck.
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  #10  
Old July 9th, 2010, 01:53 PM
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The Disco 1 sender is cheaper and easier (it is 2 wire). Should be able to get one from a scrapyard.
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  #11  
Old July 13th, 2010, 04:26 PM
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That disco 1 sender will hook up to a VDO speedo right?
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  #12  
Old July 14th, 2010, 02:15 PM
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Yes. The VDO speedos take most types of input.
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  #13  
Old July 14th, 2010, 06:07 PM
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Bueno, Gracias.
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  #14  
Old July 23rd, 2010, 10:51 AM
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I'm looking to swap out the bouncy and inaccurate stock speedo in my '95 and after reading this thread and STFA I think I have it sorted. I am sure it is much simpler than I am making it but I just want to order the correct parts before hand.

So it seems there are 2 methods to get this done:

Method 1:

Method 2:
  • Keep the stock cable but add a speed sensor at the end to work with the electronic speedo
  • Per Hans on one of the threads a cleaner way to do this is swap the stock Rover cable for a CJ7 speedo cable.
  • Travel Path: LT230 --> AMR3386 (vss) --> speedo cable (or CJ7 cable) --> speed sensor (VDO 430-011 for stock cable or VDO 430-012 for CJ7 cable) --> Electronic Speedo (VDO 437 155)

It seems like Method 1 is a little cleaner but I think I read that the VSS could cause the speedo needle to bounce. Is there a end clip that can attach to YBE 100540?

I apologize if this seems redundant or elementary to anyone. I swapped the other gauges for VDO's and they have been working fine but for some reason I was getting confused on this one until I realized there were 2 main methods of doing it.
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  #15  
Old July 23rd, 2010, 02:23 PM
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method one. Is easy Don... If you have any questions, call me.
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  #16  
Old July 23rd, 2010, 02:51 PM
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Quote:
Originally Posted by TDI Guy View Post
method one. Is easy Don... If you have any questions, call me.
Thanks Randy - will do :
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  #17  
Old July 23rd, 2010, 02:54 PM
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It depends what engine you have. Earlier V8s have a speed transducer inline with the speedo cable and this needs to stay in place for the EFI. Not sure if you also use that signal for the speedo.
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Old July 24th, 2010, 11:09 PM
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Quote:
Originally Posted by Red90 View Post
It depends what engine you have. Earlier V8s have a speed transducer inline with the speedo cable and this needs to stay in place for the EFI. Not sure if you also use that signal for the speedo.
Yep, that's what my method is for. It's pretty irrelevant for diesels, as you don't have to worry about running a second transducer for the EFI computer like you do with the Hot-Wire EFI system.

I haven't found a way yet to feed both the EFI computer and the speedo from a single transducer.

-Hans
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  #19  
Old July 24th, 2010, 11:40 PM
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Quote:
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I haven't found a way yet to feed both the EFI computer and the speedo from a single transducer.

-Hans
Why does it not work?
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  #20  
Old September 15th, 2010, 05:07 AM
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Which VDO speedo

Which one do I need? I plan on using a Disco 1 sender



Part No: 437-155 Notes: Electronic Programmable, 12 volt, with resettable LCD trip odometer
120 MPH 4 MPH $189.71 $115.75




OR




Part No: 437-155 Notes: Electronic Programmable, 12/24V, w/ resettable LCD trip odometer. For use with hall effect, inductive, OEM electronic output, and generator senders. For 24 volt applications, use bulb #600-826 (2 per instrument).
120 MPH 4 $189.71 $115.75
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