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Bradders130



Member Since: 27 Nov 2021
Location: Southampton
Posts: 105
United Kingdom 2012 Defender 130 Puma 2.2 HCPU Indus Silver
The hi/lo switch definitely alters the engine revs for sure and I know I have one as I have just changed the transfer case for a reconned one and the switch is in.

What needs to be considered here is whether there is a voltage across the two contacts A & K, as indicated in the photo, when low range is selected, which is not present when high range is selected. Assuming there is a voltage present, then I would have thought it was possible to solder in an appropriate sized LED. But, it wont be something I will be doing as it seems a bit superfluous.


Click image to enlarge
Post #1062140 6th Mar 2025 12:37am
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Martin
Site Admin


Member Since: 02 Apr 2007
Location: Hook Norton
Posts: 6657
United Kingdom 2015 Defender 90 Puma 2.2 XS CSW Montalcino Red
The high/low can't be made functional just by fitting an LED, there's no software functionality in the cluster to drive it.  1988 90 Td5 NAS soft top
2015 D90 XS SW
Post #1062141 6th Mar 2025 1:02am
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andy63



Member Since: 30 Jun 2023
Location: north east
Posts: 682
United Kingdom 
But can it be programmed to work, given that there is a socket on the board??
Post #1062226 6th Mar 2025 9:44pm
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Ianh



Member Since: 17 Sep 2018
Location: Essex
Posts: 2243
United Kingdom 
Yes.....but would require specialist equipment and knowledge. It’s not the sort of thing a GAP IDTool, Nanocom, or I’m pretty certain even dealer diagnostic tools could do retrospectively.

Dealer diagnostics could do it to a new RoW IPAC built to have this Hi/Lo capability as a working function with an appropriate IPAC software build. But that still requires a lot of detailed knowledge on Puma IPAC programming that I suspect most dealer technicians are no longer familiar with.
Post #1062242 7th Mar 2025 12:03am
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Martin
Site Admin


Member Since: 02 Apr 2007
Location: Hook Norton
Posts: 6657
United Kingdom 2015 Defender 90 Puma 2.2 XS CSW Montalcino Red
It’s a cluster/LR engineer level task, not dealer tech. It’s writing new software for the cluster to include the function to activate the lamp based on an input.  1988 90 Td5 NAS soft top
2015 D90 XS SW
Post #1062252 7th Mar 2025 8:36am
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andy63



Member Since: 30 Jun 2023
Location: north east
Posts: 682
United Kingdom 
Cheers... that's what i was wondering..
So it's not a configurable option with the right tool in its normal set up..👍
Post #1062267 7th Mar 2025 10:17am
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