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4RF RDS



Member Since: 19 Jul 2015
Location: Ottawa
Posts: 890

Canada 2000 Defender 110 Td5 XS CSW Epsom Green
Heated windscreen wiring help
So I ordered a wiring loom for my Td5 and the post 2002 switch was included. Silly me I forgot that my 2000 model did not have the factory centre console. I have an illuminated momentary defroster switch to fit into my MUD console center dash which I will use.

So the question is... What wiring hook ups do I use to acuate the relays? All other connections are identified in the instructions and I have them figured out. The picture shows the only two wires I do not know where to hook up (Orange/red and green) to be inserted into the Td5 plug in specific slots (2 & 5). Is t as simple as hook these two up the two posts on the momentary switch? The instructions do not say what these two wires do?

Appreciate any insights and assistance. Cheers



 2010 Range Rover MkIII Autobiography Super Charged (Idris)
2003 Range Rover Mk III (Desmond FitzWilliam)
2000 Defender 110 CSW TD5 (CTX)
1992 Range Rover Classic (Lizzy)
1972 Series III 300 Tdi (Stanwood)
1967 MGB GT

Every normal man must be tempted at times to spit on his hands, hoist the black flag, and begin to slit throats.
H. L. Mencken (1880 - 1956)
Post #596510 26th Jan 2017 7:53pm
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dorsetsmith



Member Since: 30 Oct 2011
Location: South West
Posts: 4554


Click image to enlarge




Embarassed

check the timer pin out against wiring diagram


Last edited by dorsetsmith on 27th Jan 2017 8:14am. Edited 1 time in total
Post #596532 26th Jan 2017 8:22pm
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Martin
Site Admin


Member Since: 02 Apr 2007
Location: Hook Norton
Posts: 6463

United Kingdom 2015 Defender 90 Puma 2.2 XS CSW Montalcino Red
Pinout above is for the rear screen (that threw me) Laughing Laughing

Correct pinout for front screen factory with factory colours:

1 Trigger to Relay Pink/Orange [KO]
2 Illumination Red/Orange [RO]
3 not used
4 Ground Black [B]
5 Telltale LED in switch Purple/Slate [PS]

So I think your loose Green is the telltale output
And the Red/Orange is the trigger input to the relay

Does your switch have only the two terminals? No backlight or telltale?  1988 90 Td5 NAS soft top
2015 D90 XS SW
Post #596616 27th Jan 2017 12:38am
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Martin
Site Admin


Member Since: 02 Apr 2007
Location: Hook Norton
Posts: 6463

United Kingdom 2015 Defender 90 Puma 2.2 XS CSW Montalcino Red
Sorry you do say it is illuminated. Is it a Defender switch (looks like it is)?  1988 90 Td5 NAS soft top
2015 D90 XS SW
Post #596617 27th Jan 2017 12:39am
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Martin
Site Admin


Member Since: 02 Apr 2007
Location: Hook Norton
Posts: 6463

United Kingdom 2015 Defender 90 Puma 2.2 XS CSW Montalcino Red
Well if I was fully awake I would know that Defender rockers aren't illuminated. Rolling Eyes

Ignoring the illumination and tell tale for a mo, you need to put the red/orange to one of the switch round pins and a ground wire to the other. This will wire up the ground signal trigger for the timer unit.

Then as you probably don't have night-time illumination on that switch but you do have a tell tale... using the tabs on the side: green to one tab, and another ground to the other.  1988 90 Td5 NAS soft top
2015 D90 XS SW
Post #596618 27th Jan 2017 12:55am
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4RF RDS



Member Since: 19 Jul 2015
Location: Ottawa
Posts: 890

Canada 2000 Defender 110 Td5 XS CSW Epsom Green
Thanks, that sounds correct from what I could figure out too. My switch a is "custom build" switch. I have it back lit with the headlights on so I can see it at night so the green trigger won't be needed (unless I set up a warning light somewhere else on the dash). Oragne /red and ground to the momentary switch.

Will give it a go tomorrow and update once I have it worked out. Appreciate the help!

Cheers. 2010 Range Rover MkIII Autobiography Super Charged (Idris)
2003 Range Rover Mk III (Desmond FitzWilliam)
2000 Defender 110 CSW TD5 (CTX)
1992 Range Rover Classic (Lizzy)
1972 Series III 300 Tdi (Stanwood)
1967 MGB GT

Every normal man must be tempted at times to spit on his hands, hoist the black flag, and begin to slit throats.
H. L. Mencken (1880 - 1956)
Post #596620 27th Jan 2017 1:09am
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Martin
Site Admin


Member Since: 02 Apr 2007
Location: Hook Norton
Posts: 6463

United Kingdom 2015 Defender 90 Puma 2.2 XS CSW Montalcino Red
Sorry yes orange/red and ground to the round pins (not red/orange).

Not confusing at all that they have used red and orange both ways round!

This is assuming that the timer is ground triggered. What's the part number on the orange timer unit?  1988 90 Td5 NAS soft top
2015 D90 XS SW
Post #596621 27th Jan 2017 1:13am
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Martin
Site Admin


Member Since: 02 Apr 2007
Location: Hook Norton
Posts: 6463

United Kingdom 2015 Defender 90 Puma 2.2 XS CSW Montalcino Red
One quick thought - is your custom backlight quite bright?

If so you could have a dimmed version as illumination and use full brightness for telltale.  1988 90 Td5 NAS soft top
2015 D90 XS SW
Post #596622 27th Jan 2017 1:16am
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4RF RDS



Member Since: 19 Jul 2015
Location: Ottawa
Posts: 890

Canada 2000 Defender 110 Td5 XS CSW Epsom Green
Don't know the relay part number its in the garage and I am off to rest now. As for the dim and bright idea, I think I can make that work, thanks neat idea. 2010 Range Rover MkIII Autobiography Super Charged (Idris)
2003 Range Rover Mk III (Desmond FitzWilliam)
2000 Defender 110 CSW TD5 (CTX)
1992 Range Rover Classic (Lizzy)
1972 Series III 300 Tdi (Stanwood)
1967 MGB GT

Every normal man must be tempted at times to spit on his hands, hoist the black flag, and begin to slit throats.
H. L. Mencken (1880 - 1956)
Post #596623 27th Jan 2017 1:19am
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dorsetsmith



Member Since: 30 Oct 2011
Location: South West
Posts: 4554

Pinout above is for the rear screen (that threw me) and me too as i copy front screen Exclamation havering tried again to day the site will only copy and rear screen no matter witch one you copy Rolling Eyes Exclamation
Post #596645 27th Jan 2017 8:27am
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Martin
Site Admin


Member Since: 02 Apr 2007
Location: Hook Norton
Posts: 6463

United Kingdom 2015 Defender 90 Puma 2.2 XS CSW Montalcino Red
The site being this site? Embarassed  1988 90 Td5 NAS soft top
2015 D90 XS SW
Post #596659 27th Jan 2017 9:33am
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dorsetsmith



Member Since: 30 Oct 2011
Location: South West
Posts: 4554

No your fine Thumbs Up think it may be copy right on the other site
Post #596682 27th Jan 2017 10:55am
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Buz



Member Since: 24 Jan 2014
Location: Forest of Dean
Posts: 238

United Kingdom 1987 Defender 90 200 Tdi HT Barolo Black
Screen capture Wink
Post #596699 27th Jan 2017 11:41am
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4RF RDS



Member Since: 19 Jul 2015
Location: Ottawa
Posts: 890

Canada 2000 Defender 110 Td5 XS CSW Epsom Green
Okay, update as promised, been a while but got silly busy and could not get to completing the wiring. The green wire is "power" to the relay, the orange is the power to the light of the switch (telltale). The other pole on the bcak of the switch to ground as suggested. All works as it should with my modified momentray switch. Will finish full install later today. Picture is of a test prior to install with voly meter showing power to iwndscreen spade connectors and all hooked up as described.

Thank you everyone for your support and assisance. Now to finish off that Northern Harvest Whisky and give my wife the kitchen counter back. Wink


Click image to enlarge
 2010 Range Rover MkIII Autobiography Super Charged (Idris)
2003 Range Rover Mk III (Desmond FitzWilliam)
2000 Defender 110 CSW TD5 (CTX)
1992 Range Rover Classic (Lizzy)
1972 Series III 300 Tdi (Stanwood)
1967 MGB GT

Every normal man must be tempted at times to spit on his hands, hoist the black flag, and begin to slit throats.
H. L. Mencken (1880 - 1956)
Post #602872 18th Feb 2017 8:04pm
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Cragster69



Member Since: 15 Jun 2021
Location: Scotland
Posts: 164

Scotland 2007 Defender 110 Puma 2.4 CSW Cairns Blue
Martin wrote:
Pinout above is for the rear screen (that threw me) Laughing Laughing

Correct pinout for front screen factory with factory colours:

1 Trigger to Relay Pink/Orange [KO]
2 Illumination Red/Orange [RO]
3 not used
4 Ground Black [B]
5 Telltale LED in switch Purple/Slate [PS]

So I think your loose Green is the telltale output
And the Red/Orange is the trigger input to the relay

Does your switch have only the two terminals? No backlight or telltale?


I've fitted a lightbar and used a Mud switch (4 pins) to replace the basic switch that came with the loom, Pin 2 on the Mud switch is for the green backlight, for this I've tied into the Red/Orange of an adjacent switch

Click image to enlarge


The green light is intermittent on the Mud switch but is consistent on the one I've tied into, everything else works perfectly.
Just wondering if anyone has had similar experience with Mud switches. I've checked with a meter and getting a consistent 12+V at the spade terminal, when the lights are on. Craig.

“Don't believe everything you read on the internet.” ― Abraham Lincoln

www.scotgrc.co.uk
Post #1014254 7th Nov 2023 5:36pm
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