LED headlight bulbs?
LED headlight bulbs?
Has anyone looked into LED headlight bulbs for Dolomite, in particular the outer which do dip & main and use an H4 bulb.
Just spent a while googling.....
My initial conclusions are that some of the H4 bulb offerings appear not to work like a H4 as they don't do high beam.
Any LED H4 buld which is bright enough looks like it has a large heat sink on the back of the bulb, so it won't fit into the outer headlight bowl. The back of the headlight bowl is also in the wheel arch so open to anything the wheel cares to throw at it so difficult to house electronics such as constant current sources which some appear to use.
So, all in all, it looks rather unlikely.
Any one else considered it, or had more luck with the research?
Just spent a while googling.....
My initial conclusions are that some of the H4 bulb offerings appear not to work like a H4 as they don't do high beam.
Any LED H4 buld which is bright enough looks like it has a large heat sink on the back of the bulb, so it won't fit into the outer headlight bowl. The back of the headlight bowl is also in the wheel arch so open to anything the wheel cares to throw at it so difficult to house electronics such as constant current sources which some appear to use.
So, all in all, it looks rather unlikely.
Any one else considered it, or had more luck with the research?
- Triumph1300
- TDC Member
- Posts: 1500
- Joined: Wed Sep 27, 2006 10:59 am
- Location: Coventry
Re: LED headlight bulbs?
I've tried H7 and H3 LED bulbs in spot and foglamps, and have been completely underwhelmed.
Look at the light source of a filament bulb, position, and size.
Then look at the LED light source.
On everyone I've seen, the light source of the LED in is a different place, and is a different shape.
Thus the light pattern is destroyed through the lens.
Just my two pennorth, if anyone knows otherwise, I'd be interested to know
Look at the light source of a filament bulb, position, and size.
Then look at the LED light source.
On everyone I've seen, the light source of the LED in is a different place, and is a different shape.
Thus the light pattern is destroyed through the lens.
Just my two pennorth, if anyone knows otherwise, I'd be interested to know
BWJ
1966 Triumph 1300 Royal Blue
1966 Triumph 2000 Blue
1965 Triumph 2000 black and rust
1967 BSA B40wd green
2018 Jaguar E pace 2018
NOBODY expects the Canley Inquisition!
1966 Triumph 1300 Royal Blue
1966 Triumph 2000 Blue
1965 Triumph 2000 black and rust
1967 BSA B40wd green
2018 Jaguar E pace 2018
NOBODY expects the Canley Inquisition!
Re: LED headlight bulbs?
I have Led's on my Sprint.
Yes the beam pattern is not the best, but I can see the
road ahead and such low wattage consumption.
The Led's do come in a Hi/Lo version, the ones I have also have a separate voltage stabiliser.
Yes the beam pattern is not the best, but I can see the
road ahead and such low wattage consumption.
The Led's do come in a Hi/Lo version, the ones I have also have a separate voltage stabiliser.
NRW 581W Sprint
On the motorway no one can hear me sing!
Construed as a public service, self preservation in reality.
On the motorway no one can hear me sing!
Construed as a public service, self preservation in reality.
- GrahamFountain
- Guest contributor
- Posts: 1735
- Joined: Sun Sep 08, 2013 3:35 pm
- Location: St Annes on Sea, Lancs.
Re: LED headlight bulbs?
Which ones are they?Mahesh wrote:I have Led's on my Sprint.
Graham
The 16v Slant 4 engine is more fun than the 3.5 V8, because you mostly drive it on the upslope of the torque curve.
Factory 1977 TR7 Sprint FHC VVC 697S (Now all of, but still needs putting together)
B&Y 73 Dolomite Sprint UVB 274M (kids!)
1970 Maroon 13/60 Herald Convertable (wife's fun car).
Factory 1977 TR7 Sprint FHC VVC 697S (Now all of, but still needs putting together)
B&Y 73 Dolomite Sprint UVB 274M (kids!)
1970 Maroon 13/60 Herald Convertable (wife's fun car).
Re: LED headlight bulbs?
I'm with Bruce on this one.
HIDs are the same. The filament in the bulb is longitudinal instead of transverse, so a proportion of the light source is either too close to the reflector or too close to the lens and so out of focus. The lens then scatters that proportion of light. They will make a beam pattern on a wall in front of the car as the majority of light is in focus, but with high intensity light, the scatter can be very dazzling to other drivers.
I'm just going back to Halogen outers in mine for this reason.
HIDs are the same. The filament in the bulb is longitudinal instead of transverse, so a proportion of the light source is either too close to the reflector or too close to the lens and so out of focus. The lens then scatters that proportion of light. They will make a beam pattern on a wall in front of the car as the majority of light is in focus, but with high intensity light, the scatter can be very dazzling to other drivers.
I'm just going back to Halogen outers in mine for this reason.
1979 Carmine Dolomite Sprint
1974 Saphire Dolomite Sprint (Soon to be tastefully modified)
2005 Mystic blue BMW M3
2004 Mystic Blue 330d
2001 Peugeot 206 Hdi180
1974 Saphire Dolomite Sprint (Soon to be tastefully modified)
2005 Mystic blue BMW M3
2004 Mystic Blue 330d
2001 Peugeot 206 Hdi180
- SprintMWU773V
- TDC Staffs Area Organiser
- Posts: 5429
- Joined: Wed Oct 18, 2006 2:08 pm
- Location: The Old Asylum
Re: LED headlight bulbs?
The problem with most LED headlight bulbs is that the beam pattern is all wrong. Sidelights, brake lights and indicators are fine as LED but I'm yet to be convinced by the headlight bulbs. The market is also flooded by non E-marked versions which are illegal, in fact the fitting of an LED bulb to a car not originally equipped is a bit of a grey area AFAIK.
That said I noticed how poor my Mazda sidelights are, LED's would be much better so perhaps I will upgrade. Speaking of the Mazda until earlier this year it still had sealed beams as these were standard fit to Japanese market cars. I've now upgraded to halogen and they're all the better for it! I miss the distinct colour of the sealed beams but I can see where I'm going much better, well as well as you can when the headlights pop up in your line of view.
That said I noticed how poor my Mazda sidelights are, LED's would be much better so perhaps I will upgrade. Speaking of the Mazda until earlier this year it still had sealed beams as these were standard fit to Japanese market cars. I've now upgraded to halogen and they're all the better for it! I miss the distinct colour of the sealed beams but I can see where I'm going much better, well as well as you can when the headlights pop up in your line of view.
Mark
1961 Chevrolet Corvair Greenbrier Sportswagon
1980 Dolomite Sprint project using brand new shell
2009 Mazda MX5 2.0 Sport
2018 Infiniti Q30
1961 Chevrolet Corvair Greenbrier Sportswagon
1980 Dolomite Sprint project using brand new shell
2009 Mazda MX5 2.0 Sport
2018 Infiniti Q30
-
- TDC Shropshire Area Organiser
- Posts: 7242
- Joined: Sun Aug 21, 2011 5:12 pm
- Location: Highley, Shropshire
Re: LED headlight bulbs?
knowing where Mahesh lives, his lights don't need to light the road well in normal use, I doubt there is an unlit road within 10 miles of his house!
Out here, miles from civilization (and streetlights) you need your lights as good as you can possibly get them, I choose Halogens, set up on the beamsetter at my local MOT place to the exact maximum allowed. Good alignment is critical to good operation, yet people in general and MOT testers in particular seem remarkably tolerant of misaligned lights on older cars - probably because they don't want the agro of freeing off (or breaking) long undisturbed headlight adjusters!
AS an aside, my local council have recently decided to turn off streetlights (there are a few in out village, though the one outside my next door neighbours house has not worked for months) between 1 am and 5am as an "energy saving measure" believe that if you like!
Steve
Out here, miles from civilization (and streetlights) you need your lights as good as you can possibly get them, I choose Halogens, set up on the beamsetter at my local MOT place to the exact maximum allowed. Good alignment is critical to good operation, yet people in general and MOT testers in particular seem remarkably tolerant of misaligned lights on older cars - probably because they don't want the agro of freeing off (or breaking) long undisturbed headlight adjusters!
AS an aside, my local council have recently decided to turn off streetlights (there are a few in out village, though the one outside my next door neighbours house has not worked for months) between 1 am and 5am as an "energy saving measure" believe that if you like!
Steve
'73 2 door Toledo with Vauxhall Carlton 2.0 8v engine (The Carledo)
'78 Sprint Auto with Vauxhall Omega 2.2 16v engine (The Dolomega)
'72 Triumph 1500FWD in Slate Grey, Now with RWD and Carledo powertrain!
Maverick Triumph, Servicing, Repairs, Electrical, Recomissioning, MOT prep, Trackerjack brake fitting service.
Apprentice served Triumph Specialist for 50 years. PM for more info or quotes.
'78 Sprint Auto with Vauxhall Omega 2.2 16v engine (The Dolomega)
'72 Triumph 1500FWD in Slate Grey, Now with RWD and Carledo powertrain!
Maverick Triumph, Servicing, Repairs, Electrical, Recomissioning, MOT prep, Trackerjack brake fitting service.
Apprentice served Triumph Specialist for 50 years. PM for more info or quotes.
Sorry.......

are you putting LED bulbs in halogen light units?
The bulbs need to be matched to the units,
so, to use LED bulbs properly you need LED units. These have E numbers.
Ian.
TDC Forum moderator
PLEASE help us to maintain a friendly forum,
either PM or use Report Post if you see anything you are unhappy with. Thanks.
PLEASE help us to maintain a friendly forum,
either PM or use Report Post if you see anything you are unhappy with. Thanks.
Re: LED headlight bulbs?
For those with (or considering fitting) aftermarket HID headlamps, please be aware that they are almost certainly NOT legal.
Here's the link, straight from the mouth of the horse....
https://www.gov.uk/government/uploads/s ... dlamps.pdf
Here's the link, straight from the mouth of the horse....
https://www.gov.uk/government/uploads/s ... dlamps.pdf
I'll get round to it - some day! 

- SprintMWU773V
- TDC Staffs Area Organiser
- Posts: 5429
- Joined: Wed Oct 18, 2006 2:08 pm
- Location: The Old Asylum
Re: LED headlight bulbs?
I did replace the sidelights on the Mazda and they are now much better. I bought a pack of 10 for no money so will have plenty left over for the Dolomite.
Mark
1961 Chevrolet Corvair Greenbrier Sportswagon
1980 Dolomite Sprint project using brand new shell
2009 Mazda MX5 2.0 Sport
2018 Infiniti Q30
1961 Chevrolet Corvair Greenbrier Sportswagon
1980 Dolomite Sprint project using brand new shell
2009 Mazda MX5 2.0 Sport
2018 Infiniti Q30