As for the current state of technology, Stern says: “Unlike ‘HID kits’ where there is no possibility of optical compatibility, that possibility does theoretically exist with LEDs. By then, several companies were selling LED headlight bulb replacements that you could direct-swap from halogen bulbs in a bunch of standard sizes. Stern’s analogy: “I wear eyeglasses, and so does my next-door neighbor. The typical advice: ‘Re-aim the lamps to keep the bright part out of other drivers’ eyes.’ But by doing that, we’ve shifted the entire beam pattern so a bunch of other stuff no longer has appropriate amounts of light on it.”, “What’s the scale of these effects on seeing distance with different effective lamp aim (whether it’s by dint of how the lamp is adjusted or how the lamp is distributing its light)? The problem here, Stern told me, is “a lack of predictability.”, More specifically: “...Occasionally it’s possible to happen upon a combination of one of these ‘LED bulbs’ and a particular headlamp that works acceptably.” (For example, DiodeDynamics has a particular ‘LED H11’ Stern recalled being successful in a particular Ford truck headlamp housing. To say it again, slightly more sciencey: LEDs in housings designed for halogen bulb replacements put the wrong amount of light in the wrong places. Our LED headlight bulbs produce a much brighter light with a wider beam, so you can see the road better for safer driving, without blinding oncoming drivers. OPT7 The concept for OPT7 was started in … The king daddy of them all [at the time of publication] is the JW Speaker 8700 Evolution-J3, which brings almost Star Trek-level technology to the old seven-inch round headlamp format.”, Stern also shouted out the “JWS 8700 Evo 2” as a good option one step down, and “another step or two down from there, [is] the Peterson Manufacturing 701C (in Peterson or Sylvania Zevo packaging — same lamp) and the Truck-Lite units are reasonably good with or without heated lens.”, JW Speaker was cited as the optimal choice right now for rectangular sealed-beam retrofits too and “Truck-Lite also makes respectable lamps in this size.”. Most car headlights are a lot more than just a bulb in a socket. To give just one of many examples of how easy it is to get tripped up on this point: Sometimes you’ll get a reasonably sharp cutoff with an “LED bulb”, but the hot spot (assuming it still exists) is moved.”, “Every last little bit of downward and/or rightward movement of the hot spot decreases the seeing distance for the driver, but the beam on the wall looks like it has a nice cutoff and hot spot.”, “Another example: say we’re dealing with a headlamp that didn’t start out with a very sharp cutoff. Add to Compare. These are sometimes called “LED replacements” or “LED bulbs.”. EEEkit Pack of 2 H11 H8 H9 LED Headlight Bulbs 24000lm Per Set 6500K Cool White Wireless Headlight LED Bulb, IP65 Waterproof, Built in IC Driver and Fan Cooling. As a general rule, don’t attempt to upgrade reflector headlights. $89.99. These headlights operate at 6000K with 12000 lumens per pair. And ‘Oh, no problem, on our bulb the LEDs can be rotated relative to the base so you can focus them’ is, if anything, worse, not better.”, The whole point of standardization of bulb types, Stern explains, is “so any headlamp designed and built to take [for example] an H11 will work safely with any bulb designed and built to the H11 specifications. Our LED headlight bulbs produce a much brighter light with a wider beam, so you can see the road better for safer driving, without blinding oncoming drivers. (In retrospect, I recognize my testing methodology was ratchet, but I stand by the takeaway.). So, yes, even when making a projector-based headlight brighter, you are increasing that built-in brightness above the cutoff as well. In addition, the low heat of … LA Series H15 LED Bulbs DRL 72W 7600LM 6000K Flip Chip. 9006(HB4) Cougar Motor 9006 Led Headlight Bulbs , 9600Lm 6500K (HB4) Fanless All-in-One Conversion Kit – 3D Bionic Technology $ 110.00. All vehicles fitted with halogen headlight bulbs from the factory are suitable for LED conversion. Many OEM projectors are designed to send some light ABOVE the cutoff for the purpose of lighting street signs helping the eyes by smoothing the sharp transition at the top of the beam pattern. As far as amateur, layperson field testing of LED headlights, Stern pointed to this thread on the Tacoma World forum as a pretty good real-world explanation of why “thoughtfully selected” halogen bulbs beat even name-brand LED retrofits. And of course, eBay and Amazon are chockers with cheapo off-brand options. 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