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Harry.O



Member Since: 25 Jul 2014
Location: Warwickshire
Posts: 714
United Kingdom 1989 Defender 90 300 Tdi ST Nato Green
The red wire on the Speedohealer needs an ignition live, the black cable needs an earth which are besides the ECU. I cut the yellow/white wire coming from terminal B13 on the black ECU plug, connected the white wire of the Speedohealer to the speedo gauge end and the green wire to the ECU end.

The instructions to programme it are on Healtech's website https://www.healtech-electronics.com/ht_sh...or_en.html
Post #613754 1st Apr 2017 10:35am
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ibexman



Member Since: 13 Dec 2008
Location: Essex
Posts: 2945
United Kingdom 
Cheers fella Thumbs Up Thumbs Up
Post #613755 1st Apr 2017 10:41am
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Martin
Site Admin


Member Since: 02 Apr 2007
Location: Hook Norton
Posts: 6608
United Kingdom 2015 Defender 90 Puma 2.2 XS CSW Montalcino Red
For transfer box correction use it should be wired in either at the engine ECU or behind the instrument pack.  1988 90 Td5 NAS soft top
2015 D90 XS SW
Post #613756 1st Apr 2017 10:43am
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steve_c3



Member Since: 30 Apr 2015
Location: Hants
Posts: 173
United Kingdom 2002 Defender 110 Td5 SW Epsom Green
Mines down near the ECU too, power and earth piggybacked from the vehicle and cut the yellow/white which carries the signal. Just make sure you connect it so the signal goes into the unit on the correct wire...few pics below if it helps.

This shows the unit, the white and green wires looped on the right are the feed wires...


Click image to enlarge

This one shows the feed wires. If you look carefully, you should be able to trace the cable routing! I just cut the yellow/white wire near the ECU. Connect the vehicle feed to the White into the Speedohealer, connect the green wire (coming out the SH) back onto the yellow/white to the wire that feeds the ECU. The instructions it comes with are pretty good.



Click image to enlarge 2002 Defender 110 CSW TD5
Post #613878 1st Apr 2017 8:37pm
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Martin
Site Admin


Member Since: 02 Apr 2007
Location: Hook Norton
Posts: 6608
United Kingdom 2015 Defender 90 Puma 2.2 XS CSW Montalcino Red
Thank you 😊  1988 90 Td5 NAS soft top
2015 D90 XS SW
Post #613881 1st Apr 2017 8:41pm
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ashtrans
Site Sponsor


Member Since: 08 Nov 2008
Location: Harpenden
Posts: 258
United Kingdom 
Hi All,

how do you know what to adjust the signal to ? as you are not changing the dash speed,

thanks,

Dave Dave
Post #698636 4th Apr 2018 7:52pm
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ibexman



Member Since: 13 Dec 2008
Location: Essex
Posts: 2945
United Kingdom 
From a sat nav gps speed
Post #698651 4th Apr 2018 8:36pm
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amondeggs



Member Since: 06 Mar 2011
Location: Telford
Posts: 452
United Kingdom 1999 Defender 90 Td5 HT Woodcote Green
If you have discovery transfer box like me it’s - 15 % as this is the difference the transfer box makes
Post #698661 4th Apr 2018 9:04pm
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DiscoSmiley



Member Since: 31 Mar 2017
Location: Alberton JHB
Posts: 5
South Africa 
Looks good. Let us know once you get it working. I still need to do mine.
Post #698682 5th Apr 2018 6:57am
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amondeggs



Member Since: 06 Mar 2011
Location: Telford
Posts: 452
United Kingdom 1999 Defender 90 Td5 HT Woodcote Green
Had mine working for over a year now. Works really well and is a huge bonus on long drives.
It made the 1000 mile non stop trip down to Spain last year much more bearable.
Great mod done using this guide Thumbs Up Thumbs Up
Post #698688 5th Apr 2018 7:35am
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ashtrans
Site Sponsor


Member Since: 08 Nov 2008
Location: Harpenden
Posts: 258
United Kingdom 
ibexman wrote:
From a sat nav gps speed


thanks but thats not what I meant, if you fit the 1.2 ratio, the speedo stays true assuming you keep the same speedo drive gear.

If you change the tyres you adjust the speedo healer to get the speedo true to a GPS but the question was what you set it to to 'fool' the ECU, not adjust the speedo but yes as 'amondeggs' suggests -15% is logical so the engine ECU knows no difference.

many thanks,

Dave Dave
Post #698731 5th Apr 2018 1:32pm
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AJC



Member Since: 30 Nov 2015
Location: Lancashire
Posts: 1363
United Kingdom 
I’m now up & running. Thanks to Harry & Grafty
Post #716747 8th Jul 2018 4:52pm
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mk1collector



Member Since: 17 Sep 2009
Location: West Yorkshire
Posts: 6769
England 2004 Defender 110 Td5 CSW Bonatti Grey
Excellent Thumbs Up you just need one of these now Whistle


Click image to enlarge


Click image to enlarge Ray
My build thread
http://www.defender2.net/forum/topic17615.html
Post #716800 8th Jul 2018 10:03pm
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AJC



Member Since: 30 Nov 2015
Location: Lancashire
Posts: 1363
United Kingdom 
All my switches are used so I have a darling switch above RHS speaker on dash
Post #716818 9th Jul 2018 4:20am
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mk1collector



Member Since: 17 Sep 2009
Location: West Yorkshire
Posts: 6769
England 2004 Defender 110 Td5 CSW Bonatti Grey
Finally got mine wired up today and on a few short journeys it seems to work perfectly Thumbs Up Ray
My build thread
http://www.defender2.net/forum/topic17615.html
Post #719512 24th Jul 2018 8:15pm
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