Speedometer cable mod for VDO - shop? - Defender Source
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  #1  
Old January 20th, 2004, 01:45 PM
mgrgpg
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Mark
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Speedometer cable mod for VDO - shop?

Can anyone recommend a shop to make me the modified speedometer cable that I need for the VDO electronic speedo?

Thanks,
Mark
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  #2  
Old January 20th, 2004, 03:53 PM
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John B.
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You don't need one. You by the genuine electronic sender. It attaches to the transfer case.

See VDo Speedo Install

From above:
"Run the two wires from the '97 OEM Land Rover sender mounted in the LT-230 transfer case (if installing in a '94 or '95, mount a '97 Land Rover sender (LR #AMR 1253) and replace the stock speedometer cable with the wires from the sender)"
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  #3  
Old January 20th, 2004, 07:01 PM
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the sender unit I got has 3 wires that come out of the t-case.. any help??
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  #4  
Old January 21st, 2004, 09:49 AM
mgrgpg
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Mark
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John,

I posted a question about the electronic sender and a few people replied back that it does not work properly on a '94 since there is some info sent to the computer from the existing transducer and the result being the car just does not run right.

Everyone pointed to the FAQ section with the cable modification, and I felt that was the safest to do. Problem is I can not find a Speedo shop in my area.

Thanks,
Mark
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  #5  
Old December 23rd, 2013, 04:48 AM
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Kenneth Elliott
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the install issues on a 94.
What did you run into exactly?
I am currently in this boat.
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  #6  
Old December 23rd, 2013, 07:14 AM
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Contact the Gaugeguys.com. They can make you a cable with any ends you need.
Nisonger no longer does custom speedo cables.
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  #7  
Old December 23rd, 2013, 09:45 AM
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It's easy to do this ... The trick is to have a resistor in line with the YBE sensor to stop it fusing. If anyone is trying to do this with a VDO send me a PM and I'll walk you through it.
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  #8  
Old December 23rd, 2013, 11:35 AM
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Quote:
Originally Posted by leastonce View Post
It's easy to do this ... The trick is to have a resistor in line with the YBE sensor to stop it fusing. If anyone is trying to do this with a VDO send me a PM and I'll walk you through it.
I had spliced the line from the speed sensor on my NAS 90 but never got the speedo to work 100%. Sometimes at stop it would still be registering a certain MPH amount. So you are saying you just have to add a resistor inline for the VDO to work correctly? What size resistor?
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  #9  
Old December 23rd, 2013, 01:23 PM
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About 110ohm should do you. Inside the YBE is a magnet on a spindle and a reed switch. The reed switch would fuse without a current limiting resistor.

My VDO takes a split second to drop to zero when I come to stop.

The same feed has to go to the ECU assuming you have a V8 nas. The ECU needs to know when the truck is moving or slowing to position the ICV idle control valve.
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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 December 23rd, 2013, 01:23 PM
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Sorry typo 120 ohm is what you need.
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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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  #11  
Old December 23rd, 2013, 05:08 PM
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Quote:
Originally Posted by leastonce View Post
Sorry typo 120 ohm is what you need.
Thanks - (and sorry I am hitting you with so many questions for a vehicle I don't even own anymore) - but do you wire the resister in-line on the wire that goes up to the back of the VDO speedo? My buddy is bringing the 90 to a garage tomorrow and I was going to ask them to see if they could do this for him.
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  #12  
Old December 23rd, 2013, 05:48 PM
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It need to go between the ECU and the YBE. Doesn't matter which side. The wire up to the speedo is a 'tap' into one of the 2 wires that goes to the YBE.

Wire it ECU - resistor - YBE - ECU first. That way you'll get it right. Then attach the VDO wire.
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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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  #13  
Old December 23rd, 2013, 10:13 PM
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So, like my wiring diagram? http://www.defendersource.com/forum/...8&postcount=27
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  #14  
Old December 23rd, 2013, 10:45 PM
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Yes although I took my 12v for the VDO from in the binnacle not from down below by the YBE.
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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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  #15  
Old December 23rd, 2013, 10:56 PM
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Yah. It does not really matter where to get the power. You could use the regulated output power from the speedo as well.
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  #16  
Old December 23rd, 2013, 11:17 PM
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Quote:
Originally Posted by leastonce View Post
It need to go between the ECU and the YBE. Doesn't matter which side. The wire up to the speedo is a 'tap' into one of the 2 wires that goes to the YBE.

Wire it ECU - resistor - YBE - ECU first. That way you'll get it right. Then attach the VDO wire.
Quote:
Originally Posted by Red90 View Post
Thanks guy - I will ask the garage to add an inline resistor to that wire and see if that gets it dialed for the new owner.
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  #17  
Old December 27th, 2013, 08:18 AM
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Kenneth Elliott
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I think im a going to install the GPS Sender VDO combo.

I am guessing the VSS is already wired to the correctly, minus the resistor to the CUX (pin 14 and the sw12v)
so is the YBE plug and play (as far as the computer is concerned)? also does the VSS connection fit the YBE?

2nd does anyone know where to YBE for a decent price? Rovers North is really proud of theirs..lol
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  #18  
Old December 27th, 2013, 09:15 AM
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Quote:
Originally Posted by Keebler View Post
I think im a going to install the GPS Sender VDO combo. I am guessing the VSS is already wired to the correctly, minus the resistor to the CUX (pin 14 and the sw12v) so is the YBE plug and play (as far as the computer is concerned)? also does the VSS connection fit the YBE? 2nd does anyone know where to YBE for a decent price? Rovers North is really proud of theirs..lol
the VSS has the resistor inside. The YBE. Does not. Hence if you replace the VSS you have to add the resistor. I took them apart to find out!

The plug is different for the VSS vs the YBE and not long enough.

I cut the cable off the VSS and added some length and the YBE connector which is same as the brake light connector.

Try paddocks or craddock in the UK ... Non genuine is fine. It's just a spinning magnet and a reed switch.
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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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  #19  
Old December 27th, 2013, 11:36 AM
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Kenneth Elliott
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thanks again
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  #20  
Old December 27th, 2013, 11:48 AM
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http://www.roverparts.com/Parts/YBE100540HRK.cfm

ab sells a cable kit
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Quote:
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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