Blue interior light?
BTW, just in the process of rebuilding my headlights with LEDs. How hard did you find it to adjust them to get the correct cut off on dip?
I think the blue splodge is a lens flare. I haven't adjusted the headlamps yet, just fitted them. The beam pattern shining across the field looks "about right", but I'm a little surprised that the LEDs seem to be mounted on the sides of the lamp. I'd have expected top and bottom, to match the way a normal H4 works.
Do you have the type with the adjustable focus ring on them. I have these ones, which you can rotate within the lens to move the dip cut off around:
http://www.powerfuluk.com/vehicles/range-rover-full-size/p38/exterior-accessories/h4-led-4000-lm-headlight-bulbs-range-rover-p38-white-pair.html
I need to put my LED lamps back in and see if I can get the cutoff looking a bit better... I'm sure it's not going to be perfect, as I've measured the light output next to a normal H4 - and it's close, but a bit wider beam angle that the halogen equivalent.
I think with a bit of tweaking of the focus it will give a good enough beam pattern where it's not going to spill over on the other side of the road and dazzle other drivers - unlike the first set of LED lamps I tried!
This is on my "to do" list for this year.
Along with knocking dents out, fixing sagging headlining, aircon, noisy timing chain, fitting new transfer box and refitting winch back on the front.
I like the look of those Orangebean. I looked on Amazon a while ago and there was a bewildering number of different types.
Let us know your conclusions when you get them sorted.
Will do Dave- hope to have lights, with LEDs, back on car tomorrow but won't have a chance to get it on the beam setter until I've got the car running well enough to get it to his garage.
Need to get that upper plenum off again and get the coil packs changed...
70 quid for 2 bulbs, are you crazy ? I'll stick with my 100w xenons, 6 quid, get the same look and a great beam, plus lifetime warranty on the bulbs.
History would seem to prove that I am, although, in my defence, they came in a very expensive box :)
Bet your lifetime bulb warranty wouldn't pay out if you sent them the pic of the headlight I've just "removed" and asked for your money back?!
, no10chris wrote:
, are you crazy ?
100w is near double the current... I can't remember what the MOSFETs were rated at for the dipped/main beam lamps, but even if they're rated okay, who knows if the tracks in the BECM routing that power or the rest of the wiring is up to it long term. Not to mention the heat in the lamp housing.
I think I'll give the LEDs a go sometime.
Chris' car after a long night drive:
Ooof, like some kind of disturbed creme egg...
If Salvador Dali painted headlights....
Chris
It so happens that I found a blue 100/55 Xenon bulb in the light unit I was swapping into mine. I'll test it and if you want it and a non-return valve pm me your address and I'll drop them in the post to you.
M
Dragging a thread up from the past but what is the beam pattern like on yours Gordon? Having been impressed with the difference a pair of H7 LED bulbs made in Dina's Merc, and having an overnight trip through France coming up next week, I decided to fit a set in mine. Rather than spending £72 on a pair that OB bought (and they are shown as out of stock), I bought these http://www.ebay.co.uk/itm/H1-H4-H7-H11-110W-20000LM-LED-Headlight-Conversion-Kit-Car-Beam-Bulbs-9005-9006/263050758238. Arrived this morning so got them fitted. Verdict, absolute crap. Yes they are bright but no matter how much I twist them (no locking screws just an interference fit) it seems impossible to get a decent beam pattern. Cut off is all over the place and having just gone for a quick blast down my unlit road test road, there's random blobs of light everywhere. The light may be a brighter white but visibility is no better, in fact it may even be worse, than it was before. Looks like the Osram Nightbreakers will be going back in tomorrow.....
I suspect, being made in China, they are configured for lights that should dip the other way so the LED positioning and headlamp lens are fighting against each other with neither winning. Anyone found any decent ones that do give the correct beam pattern but with better visibility other than the ones OB used?
It's actually not too bad, but I swapped back to halogens for the MOT for the sake of a quiet life. I'd like to get a shot of a proper beam setter to check them for myself.
That bad beam pattern has nothing to do with left hand / right hand dip but everything to do with flat out rip-off inattention to optical design.
The COB LED used has completely the wrong aspect ration. Far too wide so light is going in all the wrong places.
The only way to get a satisfactory beam pattern with our relatively old design rectangular headlamps is with long narrow sources. Either multiple small square LEDs like the ones Powerful UK were selling or suitably short and narrow filament style LEDs. Headlight reflector and lens combination design is quite sophisticated even on our older vehicles. However the fairly flat top and bottom of our reflectors does make for a relatively inefficient light distribution, especially on dip, with normal bulbs. It also constrains the source dimension and size if light isn't going to go shooting all over the shop. The H4 bulbs were, after all, optimised for use with fairly large circular reflectors.
Our lights were designed way before effective computer simulations and the simplifying assumptions needed constrained the designer to using either a line source or multiple points. What happened to light from outside the assumed sources being pretty much in the lap of the gods and invariably bad. Even older design simple circular lights would make a better fist of coping with the wrong shape source. I imagine the smoothing functions used in modern computer analysed designs for headlamp systems to ensure you get results in something approaching reasonable time would also make them quite tolerant of wrong shaped sources. But thats pure guesswork as my professional involvement in real optics and lens design ended before folk got a handle on how to tackle such complex problems.
Clive
Gilbertd wrote:
Anyone found any decent ones that do give the correct beam pattern but with better visibility other than the ones OB used?
Yep. £15. Bought in June. I posted about them briefly in Marty's headlight topic. Ive looked through my ebay but dont have them in my watched list anymore, and cant find which seller i got them from. All.i can say is theyre brilliant. Like driving in daylight. Good construction in the housing. No grub screw. You just twist until you get them rotated correctly. I had them to the MOT man and he stuck em on his light thingy. Good beam which rolls off nicely. I think i gave my mate the item number. When i see him, i'll see if he has it as me telling you how good a product is without showing you the prouct is a pretty poor review. Lol.
Have a look in your purchase history and you should find them, BPS