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neverin



Member Since: 26 Sep 2016
Location: worksop
Posts: 47

United Kingdom 2010 Defender 110 Puma 2.4 XS CSW Stornoway Grey
Red Bison Heated Windscreen - How to test?
Hi All,

I've fitted a Red Bison heated windscreen to my 2004 TD5 defender.

I tried it this morning but it didnt melt the frost.

The light comes on and the relay clicks when i press the switch and it stays on for about 10 mins but not melting the frost.

Tested it with the engine running even though it clicks and lights up when ignition is off.

Are there some multimeter checks i can do?

Any help greatly appreciated.
Post #1021010 13th Jan 2024 11:35am
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andy63



Member Since: 30 Jun 2023
Location: north east
Posts: 521

United Kingdom 
the timed relay operates another relay, and by the sounds of it that side of it is working fine... but you need to check the supply to that second relay..im afraid I don't know what fuse is involved in supplying that second heated screen relay..
Post #1021025 13th Jan 2024 1:51pm
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neverin



Member Since: 26 Sep 2016
Location: worksop
Posts: 47

United Kingdom 2010 Defender 110 Puma 2.4 XS CSW Stornoway Grey
This is the kit I bought.
Post #1021070 13th Jan 2024 10:18pm
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neverin



Member Since: 26 Sep 2016
Location: worksop
Posts: 47

United Kingdom 2010 Defender 110 Puma 2.4 XS CSW Stornoway Grey
Here is instruction diagram. Maybe I have a bad earth?
Post #1021073 13th Jan 2024 10:33pm
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bankz5152



Member Since: 02 Feb 2017
Location: South London/North Kent
Posts: 2173

2004 Defender 110 Td5 DCPU Epsom Green
Multimeter on the windscreen connections. If theres voltage there it works if not then work your way back Instagram @defender_ventures
Empire Tuning - Agent
Post #1021089 14th Jan 2024 8:55am
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Balvaig



Member Since: 19 Feb 2016
Location: Fife
Posts: 731

Scotland 2016 Defender 90 Puma 2.2 Landmark LE Corris Grey
If it is installed as the diagram there is not much to check.
If there is power to windscreen connections then the screen elements have failed.
Check the earth, as it is possible that the switch light could illuminate if the earth is poor.
As the switch light illuminates then the fuse would seem to be ok, but you could replace it to be certain.
If there is no power to the windscreen connectors, then the control box may have failed.
Your multimeter is the solution here. Just work through the circuit.
Post #1021125 14th Jan 2024 11:58am
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neverin



Member Since: 26 Sep 2016
Location: worksop
Posts: 47

United Kingdom 2010 Defender 110 Puma 2.4 XS CSW Stornoway Grey

Click image to enlarge




So i've removed the cover to investigate and as you can see the quality of craftsmanship is not as good as first hoped. Anyway i've take some multi meter readings. Can anyone offer any support?

I've also done a reset as per instructions but there is still no voltage to allow the windscreen to get warm.



Click image to enlarge
Post #1022701 27th Jan 2024 2:24pm
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pistonfields



Member Since: 29 Mar 2022
Location: Zurich
Posts: 72

Switzerland 
Had mine fail too. Changes are one of the wires are broken, they use very cheap materials. Sadly. Because the thing itself is way overpriced for what you find inside. I wouldn't bother trying to repair it but instead replace it with a timer relais circuit board from aliexpress. Costs next to nothing and has adjustable timing settings with buttons and displays. Will edit my post when I get home to include and example. Have replaced it myself and happy ever since.

/edit: I used a board like this one here. Programmable, but current only up to 15A. That's why I use it to trigger a normal relay to be on the safe side.
Post #1022764 28th Jan 2024 6:27am
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Mo Murphy



Member Since: 01 Jun 2008
Location: Letchworth Garden City, Herts
Posts: 2235

United Kingdom 1984 Defender 90 BMW M57 3.0 Diesel HT Auto Pennine Grey
I don't think the Red Bison brand has a particularly good reputation for quality ! I used the Mobile Centre harness which though quite expensive has worked flawlessly for the last 9 years.
Mo The Land Rover 90 - Many are called, few are chosen.

50 Shades of Pennine Grey
Post #1022785 28th Jan 2024 10:02am
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 17417

United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
It's really not difficult to make your own harness and replicate the factory installation.
Post #1022787 28th Jan 2024 10:10am
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neverin



Member Since: 26 Sep 2016
Location: worksop
Posts: 47

United Kingdom 2010 Defender 110 Puma 2.4 XS CSW Stornoway Grey
what current would it normally pull? would it be over 15amp? the fuse fitted is 30amp
Post #1022825 28th Jan 2024 5:08pm
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neverin



Member Since: 26 Sep 2016
Location: worksop
Posts: 47

United Kingdom 2010 Defender 110 Puma 2.4 XS CSW Stornoway Grey
All working now. Voltage at windscreen. Found this same item on Amazon, ordered, fitted and now windscreen should work. Just need a frosty morning.....



Click image to enlarge
Post #1023535 4th Feb 2024 2:23pm
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