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Fitting resistors to d4 rear lights
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Nubber99
 


Member Since: 13 Apr 2014
Location: Poole
Posts: 289

United Kingdom 2005 Discovery 3 TDV6 SE Auto Tonga GreenDiscovery 3

If the LED dies you will never know anyway. The whole purpose of the resistor is to fool the electronics into thinking there is a bulb there. So you have to do a visual check. The car won't help you if an LED dies.
  
Post #136537228th Oct 2014 8:36 pm
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Robbie
 


Member Since: 05 Feb 2006
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United Kingdom 2013 Discovery 4 3.0 SDV6 HSE Auto Baltic BlueDiscovery 4

'If the LED dies'?

I think there are quite a few in there!
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Post #136540028th Oct 2014 9:05 pm
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Comc
 


Member Since: 14 Jan 2013
Location: Edinburgh
Posts: 238

Scotland 

Question from me as a daftie Razz

What is the likelihood of all led's failing within a multi-led lamp?

I have no resistors fitted just now, and I have the multi-led hids4u replacement lamps up front (following detango), I have multi-led side repeaters, and d4 rears.
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Post #136540928th Oct 2014 9:16 pm
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ronp
 


Member Since: 29 Nov 2006
Location: North Yorkshire
Posts: 15213

United Kingdom 2014 Discovery 4 3.0 SDV6 HSE Auto Corris GreyDiscovery 4

Nubber99 wrote:
If the LED dies you will never know anyway.


As this post was immediately after mine I assume it was that which you were answering.

In my post I stated that if a FRONT indicator bulb had blown (assuming it were a standard bulb - as this thread is about LED REAR lights.)
So to clarify, with not having resistors fitted to LED rear lights you wouldn't know if a front non led bulb had blown.
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Post #136542128th Oct 2014 9:31 pm
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Nubber99
 


Member Since: 13 Apr 2014
Location: Poole
Posts: 289

United Kingdom 2005 Discovery 3 TDV6 SE Auto Tonga GreenDiscovery 3

Yep I agree with you. With LED back lights with no resistor and normal front indicator bulbs, you would never know if a front bulb went.
  
Post #136544128th Oct 2014 10:00 pm
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Nubber99
 


Member Since: 13 Apr 2014
Location: Poole
Posts: 289

United Kingdom 2005 Discovery 3 TDV6 SE Auto Tonga GreenDiscovery 3

Comc wrote:
Question from me as a daftie Razz

What is the likelihood of all led's failing within a multi-led lamp?

I have no resistors fitted just now, and I have the multi-led hids4u replacement lamps up front (following detango), I have multi-led side repeaters, and d4 rears.


I think the chances of an LED failure is small. LED's seem to be rated for about 5 years continuous use, so an indicator should last virtually forever in a car. Even sidelights/rear lights aren't on all the time and should last ages. However you can't just connect an LED to a car battery. It needs some kind of current limiter that might be something as simple as a resistor internal to the bulb (not the ones fitted to fool the car electronics into thinking it has an incandescent bulb fitted) or possibly something a bit more complicated. So if the current limiter were to fail, then the whole thing would go off regardless of the number of LED's (unless they had individual current limiters fitted for each LED).

I have had cheapo chinese multi LED bulbs fail. They would flash at a high frequency when switched on. I've got the hids4u multi LED orange indicators in the front. I'm sure that thay will be far more reliable. They are also very bright!
  
Post #136545428th Oct 2014 10:14 pm
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Comc
 


Member Since: 14 Jan 2013
Location: Edinburgh
Posts: 238

Scotland 

Thanks for the explanation Nubber99 8)
 Colin
Sunroof Drains Cleared
BAS EGR Blanking Kit Installed
Perm Live Aux "Link"
DVD Player Installed
LED sidelights, front indicators, side repeaters, number plate lights, interior lighting done
De-IrnBru'd Headlights
D4 Rear Lights
Belts Changed by Indy
Dr Tranny added to Gearbox
Aftermarket LR Bluetooth Kit removed and D4 Module installed
Suspension Compressor Dryer Overhaul
Front Fog Light Loom Repaired
Drivers Heated Seat Base Replaced

To do:
Remap 
 
Post #136546228th Oct 2014 10:19 pm
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Bobs
 


Member Since: 29 Oct 2013
Location: Manchester
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England 2005 Discovery 3 TDV6 SE Auto Zambezi SilverDiscovery 3

This is a good reference .... Thumbs Up



Although Narpy kindly did mine and I chose to have them on the body rather than the unit themselves .....

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Post #136547628th Oct 2014 10:37 pm
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EstorilM
 


Member Since: 15 Oct 2009
Location: Virginia
Posts: 28

United States 2006 LR3 4.4 V8 HSE Auto Chawton WhiteLR3

You all are funny.. you can make resistors for $5 from any electronics store.. give yourself a + and - lead.. heatshrink the entire thing.

I just used inline splice connectors.. slide them around the neg and turn signal wires of the harness, squeeze shut and slide lock around the top and you're good to go.

I did this on my RRS and it worked fine for 3 years before I sold it.. just did the same on my LR3 and it's perfect.

FWIW the 2014 "blackout" edition LR4 tail lights are a little more $$ but look SWEET on black and white LR3s.
  
Post #136630030th Oct 2014 1:15 pm
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Narpy
 


Member Since: 18 Jul 2011
Location: Stockport
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2005 Discovery 3 TDV6 S Manual Cairns BlueDiscovery 3

If what you describe is what I think you're describing, it is known on this side of the Atlantic as a Scotch Lock and anybody who prefers those over direct soldering, deserves everything that will eventually go wrong. Rolling Eyes

Good luck with that but you wont find many forum members who agree with you. Wink
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Post #136631230th Oct 2014 1:42 pm
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Yargo
 


Member Since: 25 Dec 2020
Location: Europe
Posts: 326

2014 Discovery 4 3.0 SDV6 HSE Auto Java BlackDiscovery 4

What omh and wattage resistors are required for rear LED lights from d4? Some sell 5w, some 25w, and different omhs as well Question Exclamation
  
Post #221128316th Feb 2021 6:51 pm
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darrind
 


Member Since: 04 Jul 2008
Location: In A World of My Own!
Posts: 2863

England 2013 Discovery 4 3.0 SDV6 HSE Auto Santorini BlackDiscovery 4

There is a video on the Britpart Youtube channel how to fit them.

I haven't bothered and have gone through around a dozen MOTs on 3 Different D3s with the faster blinking noise.
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Post #221128716th Feb 2021 7:03 pm
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Yargo
 


Member Since: 25 Dec 2020
Location: Europe
Posts: 326

2014 Discovery 4 3.0 SDV6 HSE Auto Java BlackDiscovery 4

I know how to fit them, but what is the math around resistor calcs? Different places sell different resistors for Discovery.
  
Post #221128816th Feb 2021 7:08 pm
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