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D3 to D4 headlight conversion - headlight wiring
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Ambit
 


Member Since: 12 Dec 2017
Location: Wales UK
Posts: 111

Wales 2005 Discovery 3 TDV6 SE Auto Java BlackDiscovery 3
D3 to D4 headlight conversion - headlight wiring

Could any of you help me out with the following at all?

I’m trying to work out what wires to change to complete the headlight conversion all parts are now fitted my d3 had non afs xenon and I’ve gone with non afs 2015 model headlights. All working fine apart from,

1:No high beam when you flash headlight stalk with headlights off ( works fine with them on)
2:No bright drl when start up. Knew this would need a power input upon ignition but unsure where feed needs to go.
3:Indicators flash fine on vehicle exterior but extra fast on dashboard display.
Any help would be greatly appreciated Bow down


  
Post #19241769th Mar 2018 11:52 am
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TigerRecovery
 


Member Since: 31 May 2017
Location: Rugby
Posts: 617

Wales 2013 Discovery 4 3.0 SDV6 HSE Auto Orkney GreyDiscovery 4

I'm sure there's information on here from others. But the indicators are due to the fronts now being LED and the car looking for bulbs, you'll need to fit resistors to them.

The headlamp flash issue needs a relay and wiring added to switch the bulb on as well as operate the shutter for main beam.
 1972 Range Rover Classic 2 door V8
2001 Mercedes Sprinter 4x4 with winch (sold)
2013 Land Rover Discovery 4 HSE
2019 Land Rover Discovery Sport HSE Byron Blue with Black pack(The wife's car) 
 
Post #19241789th Mar 2018 11:56 am
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Ambit
 


Member Since: 12 Dec 2017
Location: Wales UK
Posts: 111

Wales 2005 Discovery 3 TDV6 SE Auto Java BlackDiscovery 3

Thanks, I’ve had a good search on here but not found a specific guide or ‘how to’ which I will put up here once sorted, if you have any images or wiring diagrams could you list them here of the relay wiring that needs to be done. As the D3 didn’t have Drl’s at all from new I would think that I am going to have to run an ignition feed into each headlamp to get the bright signature drls to illuminate once the engine is started. If anyone has the wiring diagram for the headlight socket on the back of the 2015 headlamp that would be really helpful below is a pic of the socket on the rear of my headlight


  
Post #19242779th Mar 2018 5:12 pm
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darrind
 


Member Since: 04 Jul 2008
Location: In A World of My Own!
Posts: 1186

England 2009 Discovery 3 TDV6 HSE Lux Auto Santorini BlackDiscovery 3

There is also an issue getting the DRL or sidelight LED to dim when the indicator flashes in the way that the factory fitted ones do - I was told this will be needed to meet the new MOT requirements from May onwards by someone last week.
 Must stop buying shiny toys....  
Post #19242919th Mar 2018 6:02 pm
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Ambit
 


Member Since: 12 Dec 2017
Location: Wales UK
Posts: 111

Wales 2005 Discovery 3 TDV6 SE Auto Java BlackDiscovery 3

Yes was gonna cross that bridge once I had actually got the drls working Rolling with laughter
  
Post #19244569th Mar 2018 10:46 pm
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CJP2017
 


Member Since: 27 Feb 2017
Location: London
Posts: 165

United Kingdom 2005 Discovery 3 TDV6 SE Manual Alveston RedDiscovery 3

hey, any luck with wiring up the DRL to ignition so the LED strip stays on?

thanks
  
Post #193127629th Mar 2018 8:37 am
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Ambit
 


Member Since: 12 Dec 2017
Location: Wales UK
Posts: 111

Wales 2005 Discovery 3 TDV6 SE Auto Java BlackDiscovery 3

Yes really simple took a ignition feed from the under bonnet fuse box. Tapped into that feed wire underneath the fuse box and ran wiring through to each headlight. So high power drls came on with ignition. Then fed the feed for side lights from the loom into the lower power for the dry so they dim with side lights. Then the rest was done through coding.
  
Post #197265310th Aug 2018 10:44 am
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discoverybrazil
 


Member Since: 07 Aug 2018
Location: sao paulo
Posts: 57

Brazil 2006 Discovery 3 4.4 V8 HSE Auto Keswick GreenDiscovery 3
Re: D3 to D4 headlight conversion - headlight wiring


Ambit wrote:
Could any of you help me out with the following at all?

I’m trying to work out what wires to change to complete the headlight conversion all parts are now fitted my d3 had non afs xenon and I’ve gone with non afs 2015 model headlights. All working fine apart from,

1:No high beam when you flash headlight stalk with headlights off ( works fine with them on)
2:No bright drl when start up. Knew this would need a power input upon ignition but unsure where feed needs to go.
3:Indicators flash fine on vehicle exterior but extra fast on dashboard display.
Any help would be greatly appreciated Bow down




great job man!! my disco have a upgrade but head lights i cant do it! my dream Big Cry
i saw your gallery its really difficult !
post more pics to us
thanks








 LR3 ON ROAD ONLY  
Post #197270510th Aug 2018 2:47 pm
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RimvydasHat
 


Member Since: 31 May 2017
Location: Vilnius
Posts: 4

Lithuania 2006 LR3 4.4 V8 Base 7 Seat Auto Rimini RedLR3

whitch exact pin in MY15 headlight is for DRL?
as drl now works in dim mode i tried to feed 12v to pin8 but still nothing Whistle
  
Post #19810065th Sep 2018 3:00 pm
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Ambit
 


Member Since: 12 Dec 2017
Location: Wales UK
Posts: 111

Wales 2005 Discovery 3 TDV6 SE Auto Java BlackDiscovery 3

I didn't record pin outs. Just used a power probe and with headlight earthed I then put 12v to all pins to establish which was high and low on the DRL.
  
Post #198336914th Sep 2018 10:05 am
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RimvydasHat
 


Member Since: 31 May 2017
Location: Vilnius
Posts: 4

Lithuania 2006 LR3 4.4 V8 Base 7 Seat Auto Rimini RedLR3

SOLVED. it's pin 8 on headlight for the bright DRL.
Sheep
  
Post #198591024th Sep 2018 7:49 am
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CJP2017
 


Member Since: 27 Feb 2017
Location: London
Posts: 165

United Kingdom 2005 Discovery 3 TDV6 SE Manual Alveston RedDiscovery 3

oh wow RimvydasHat!!!
i just tried that to test pin 8 and it looks amazing!!!!
however now comes the issue with dimming the LED when the indicator is on. anyone any luck?

thanks all!
  
Post #200779010th Dec 2018 4:51 pm
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Ambit
 


Member Since: 12 Dec 2017
Location: Wales UK
Posts: 111

Wales 2005 Discovery 3 TDV6 SE Auto Java BlackDiscovery 3

Yes I found the feed when side lights are on there’s a pin for input from side lights so when engine is on and drls are bright out 12v from a power probe or run a length of cable from positive terminal on battery into any empty pin on the rear of the headlight plug and when the drl dims you’ve found your input. Then wire the sidelight output wire into this pin job done
  
Post #200796311th Dec 2018 2:52 am
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LR3norway
 


Member Since: 25 Dec 2016
Location: NORWAY
Posts: 162

Norway 

Been thinking off doing this for 2 years. Laughing finally got it on the list.

Deactivated Scandinavian Light setting.
ACC on the pin8 turns on the DRL. With a NC relay on, switched off by the xenon.
So with light switch on AUTO, there is only DRL led in daylight. Xenon (with low led) and taillights at night.
Still one problem thought, with light switch in position 1, the parklight (sidelight you call it?) also is autoswitched. So no parklight in daylight. Have to figure something out to sort that.


 

Last edited by LR3norway on 14th Dec 2018 1:39 pm. Edited 1 time in total 
Post #200902114th Dec 2018 1:14 pm
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LR3norway
 


Member Since: 25 Dec 2016
Location: NORWAY
Posts: 162

Norway 

Also, these fits the headlight connectors.

https://rover.ebay.com/rover/0/0/0?mpre=ht...3269548366
  
Post #200902614th Dec 2018 1:25 pm
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