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Kreemerz
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104 Posts
Discussion Starter #1 (Edited)
Can I replace both stock headlamp bulbs (high and low) with LED lights? If so, are these both H11 bulbs?

I haven't seen this yet.
 

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Registered
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3,341 Posts
I would wait a couple of years to switch over to LEDs... they will get better for headlights.
For now get some cheap HIDs. They will be brighter and cheaper (DDM tuning is like $40?)
4500-5000K.

Or you can go all out and spend 150-170 dollars on TRS.
 

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Kreemerz
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104 Posts
Discussion Starter #4
LED/Bulb Replacement Guide

Door Panel (Step Lights): #194
GloveBox: #74
Below Radio (USB Light): #74
Shifter Light: #74
Reverse lights: #921 (#194 will also work)
Trunk Light: #194
License plate: #194
Brake light bulb: #74 43
Back Seat Courtesy Lights: #194
High Beam Head lights: H9
HID Low Beam: H11
HID Fog Lights: H11
 

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My Other Ride is Your Mom
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86 Posts
I swapped out my low beams for 6th gen JDM ASTAR (2800 lumens per side) and they are noticeably better than stock. Not as good as an HID setup, but they are definitely an upgrade over the stock bulbs.

I also installed some XML2 LED fog light bulbs from Diode Dynamics (1410 lumens per side). These actually made the most improvement because they widened the lighted field of vision directly in front of the car dramatically over the stock halogen fog light bulbs. This picture makes them look even brighter than the low beams but its the reflection of light from the ground.

Will upgrade again as LED technology continues to improve, but I currently have almost 10k miles on these with no issues at all.
 

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09 Altima 3.5SE 6MT Sedan
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5,748 Posts
I swapped out my low beams for 6th gen JDM ASTAR (2800 lumens per side) and they are noticeably better than stock.

...

Will upgrade again as LED technology continues to improve, but I currently have almost 10k miles on these with no issues at all.
Looks like the ASTAR design uses fans for cooling, very interested to know if you see salt slush in the winter or not--or your thoughts on the longevity of the little electric fans on the *ss end of the bulbs. I'm waiting for a pair of 4000 lumen passively cooled H11's to show for my fogs. Will post when I get them.
 

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My Other Ride is Your Mom
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86 Posts
Looks like the ASTAR design uses fans for cooling, very interested to know if you see salt slush in the winter or not--or your thoughts on the longevity of the little electric fans on the *ss end of the bulbs. I'm waiting for a pair of 4000 lumen passively cooled H11's to show for my fogs. Will post when I get them.
I will be in Great Lakes, IL semi-permanently starting November 2nd, so I will get some first-hand empirical data regarding how well the LED lights stand up to harsh elements.

I really hate snow, slush, ice, etc. Hopefully the LED bulbs are indifferent.
 

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09 Altima 3.5SE 6MT Sedan
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5,748 Posts

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Start The Show - Jet
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1,211 Posts

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456 Posts
I thought the entire sealed unit had to be designed for LEDs for them to really work well -- isn't this just resulting in a bunch of glare and scatter?
 

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09 Altima 3.5SE 6MT Sedan
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5,748 Posts
I thought the entire sealed unit had to be designed for LEDs for them to really work well -- isn't this just resulting in a bunch of glare and scatter?
They have positioned the LED elements at the same focal point as the halogen filaments. Some have quartz tubes to further scatter the light. Not full 360' emission like a filament, but far far better than putting D2S HIDs in a reflector assembly.
 

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Start The Show - Jet
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1,211 Posts
/\/\ This.

It's not perfect, though. I do get some pretty intense spotlighting in the high beam due to the reflector design. I'll have to take some pics for you. They're definitely better in projectors.
 

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2010 2.5 SL
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687 Posts
/\/\ This.

It's not perfect, though. I do get some pretty intense spotlighting in the high beam due to the reflector design. I'll have to take some pics for you. They're definitely better in projectors.
Now you have me confused. You stated that you agree with what d0ugmac said about LEDs having the same focal point of halogens (news to me) and thus being a better choice for reflector style headlights than just putting in an HID bulb with we all now has a different focal point.

But you follow that up by saying that the LEDs work better in projectors than in a reflector (which would imply that their focal point is more on par with an HID bulb, and not suitable for Halogen designed housing.

Or am I misinterpreting something?
 

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09 Altima 3.5SE 6MT Sedan
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5,748 Posts
Point is, they are still a stronger 'point source' of light than a filament is, and so the reflector design is reflecting a smaller, denser bright spot than it would with an equivalent halogen filament. If you look at the reflector design, it's not a simple parabolic, it's many smaller segments of parabolae, which create many 'copies' of a bright spot surrounded by 'darker areas'--hence the hotspots, which are of course different than glare.
 

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Start The Show - Jet
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1,211 Posts
Point is, they are still a stronger 'point source' of light than a filament is, and so the reflector design is reflecting a smaller, denser bright spot than it would with an equivalent halogen filament. If you look at the reflector design, it's not a simple parabolic, it's many smaller segments of parabolae, which create many 'copies' of a bright spot surrounded by 'darker areas'--hence the hotspots, which are of course different than glare.
Thanks, Doug. Beat me to it.

@MRR, LED's don't have the same focal point as Halogens, or HIDs for that matter, but they can be made to generate light in a more similar pattern to Halogens than HIDs. Pics may help:

Halogen - left, HID - right (sorry for the Spanish)


LED - similar to mine, but mine are side-by-side high-power LED without the third on the bottom.
 

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Registered
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6,323 Posts
Oh , your new setup BP !
 

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09 Altima 3.5SE 6MT Sedan
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5,748 Posts
maybe these will help explain



 

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09 Altima 3.5SE 6MT Sedan
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I have them - fleabay version - for my fogs and high beams. They're decent, and have good output. They don't fare as well in the high beam reflector than they do in the fog projectors, but MAN they're bright.
I'll second that...got them in today (4000LM 2S H11 @ 6000K). Build quality is good, but the engineering is so-so. The instructions non-existent...not that I read them until after installation, but still!

The H11 adapter ring (adapts the generic LED unit to a specific bulb type application) is a twist-lock ferrule that used a silicon washer to hold it in place, which means the unit can move, even when locked into the fog. It's long enough that the tip of the bulb wanders all over the place...as does the focus as a result. Not sure how this will hold up under rough road conditions.

It comes with a dust shield which is all but useless and no obvious application or instructions.

I applied a liberal dob of dielectric grease before inserting the 2-pin plug adapter to H11/H8 plug. This should buy me a few more winter months of use.

One note of interest, the plug is non-polarized...and you do not have to worry about positives or negatives, the bulb will light either way.

Now, at least, the rug matches the drapes...no more yellow fogs.
 

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09 Altima 3.5SE 6MT Sedan
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5,748 Posts
Pics of the 'rug' setup... Still not sure what to do the supplied rubber boots...will check in a week and if they fall off, will remove. Figure at least this way, they get some protection from crap spraying up. I ran the lights for 5 mins and the back caps were warm, but nowhere near burning hot.

 
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