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anotherrick



Member Since: 02 Feb 2024
Location: Lancashire
Posts: 28
 1997 Defender 110 300 Tdi CSW Rioja Red
Another dim/dip question
I'll keep it brief as I just need clarification. As I don't want to spend £30+ on a dummy relay I know my other options are unplug the resistor in the inner wing or bridge the terminals in the relay behind the dash.
So my question is do I need to do both? Or is it one or the other?
Even after reading some old posts I was still confused haha.

Thanks.
Post #1023897 7th Feb 2024 8:57pm
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rustandoil



Member Since: 08 Sep 2012
Location: Cotswolds
Posts: 738
England 2005 Defender 110 Td5 XS DCPU Bonatti Grey
I just unplugged the resistor to disable mine
Post #1023921 8th Feb 2024 12:19am
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landy andy



Member Since: 15 Feb 2009
Location: Ware, Herts
Posts: 5707
2006 Defender 110 Td5 USW Zermatt Silver
Re: Another dim/dip question
anotherrick wrote:
I'll keep it brief as I just need clarification. As I don't want to spend £30+ on a dummy relay I know my other options are unplug the resistor in the inner wing or bridge the terminals in the relay behind the dash.
So my question is do I need to do both? Or is it one or the other?
Even after reading some old posts I was still confused haha.

Thanks.


One or the other. Don’t need to do both.
Post #1023934 8th Feb 2024 7:56am
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nick.bw



Member Since: 26 Oct 2020
Location: Essex
Posts: 72
United Kingdom 2014 Defender 110 Puma 2.4 XS CSW Santorini Black
Ohh what does this achieve, brighter dipped beam?
Post #1023957 8th Feb 2024 12:01pm
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 17386
United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
It prevents the dip beam headlights being illuminated at reduced power when the sidelights alone are on, it makes no difference at all to dip and main beams.

Dim dip causes significant problems if you replace your halogen headlights with LED units, since these don't work properly on reduced voltages. It also shortens very considerably the life expectancy of H4 bulbs since halogen bulbs do not function properly when run "cold".

It was a rather half-witted and short-lived legal requirement in the UK only, which the EC almost immediately ruled to be an illegal requirement. It then became optional since it couldn't be mandated, however most British manufacturers continued (annoyingly) to fit dim-dip systems.
Post #1023959 8th Feb 2024 12:14pm
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rustandoil



Member Since: 08 Sep 2012
Location: Cotswolds
Posts: 738
England 2005 Defender 110 Td5 XS DCPU Bonatti Grey
This is what a dim dip resistor looks like Thumbs Up



Click image to enlarge
Post #1023961 8th Feb 2024 12:28pm
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TexasRover



Member Since: 24 Nov 2022
Location: Paris
Posts: 1057
France 2002 Defender 110 Td5 DCPU Chawton White
There was a time that every country had their own lighting requirements which could be illegal in another. In Scandinavia you had to have headlights on and I recall in Holland there was a point it was illegal to have your headlights on during the day (?). in the 70-80s we had a imported Swedish Volvo which had dedicated bright corner lights (25w) and everyone used to flash their lights at us - yeay yeay.

Then there were people saying it would be bad for the battery to have your headlights on permanently. I suppose the half headlight (dimmed dipped lights) was a solution to that?

Now the complaint is that modern (LED) lights are too bright and cause blinding, which I do agree with. Its a whole dog and pony show now with lights going and off around corners.

In the USA for a long time ONLY the sealed round and later rectangular headlights were allowed (clearly a monopoly from the manufacturers). At least this resulted in cheap lights, such as fitted on our defenders compared to some of the modern lighting fitted...
Post #1023964 8th Feb 2024 12:49pm
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