We have these on almost all our HUMVEE's and HEMETT vehichles which are 24v systems. They are FAR better than the standard headlights that were in there. They have a very good beam pattern and pretty good throw! I think they cost the Army like $230 a piece.
They hold up quite well in the heat over here haven't had any problems with them nor have I heard anything bad about them either. Everyone wants a set on their vehicles. They do use them during the day but it is more like they have to have them on when the vehicle is on.
are you guys serious? ok, if you can post beamshots to prove me wrong, go ahead, but these things are nothing more than a few LEDs at spot and a few LEDs with a wide-angle optic. Nothing special. You could make one yourself that would perform way better. Does my link not work or something? If you need to register before it will let you view the thread, tell me, I will ask to rehost the pics and post them here when I do, but you can't look at those pictures and say that these things are amazing or anything like that.
Now, I can see MightyQuinn's point since he probably sees a lot of flat terrain with straight roads where he is, and in that case, these lights will excell with that tight pencil-beam hotspot.
http://www.hidplanet.com/forums/viewtopic.php?p=462960GhostDakota said:Here they are on my vehicle.... Just some teaser shots for you.... Camera was put on the same manual exposure setting & white balance for the photos.
Hella E-code, upgraded wiring harness (12 gauge w/ dual relays, fuse, etc.), and 170/100 watt IPF bulb versus the LED headlight:
LEDobsession what lights do you have in there now? I have a 70 with the 4-light system you have he same right? I hope you don't have T-3's in there
Previous (very detailed) thread on these lamps here. If you've just got to have have LED headlamps because they're cool (which they are), and you can afford the $300 to $400 each, then buy these. They perform okay, not great. They are still outperformed by well-made conventional headlamps...that is, a $20 H6024NH GE NightHawk sealed beam gives objectively better beam performance. This LED headlamp was designed, photometrically, to replace the 24-volt military 7" round sealed beam, which has awful photometrics, much worse than even the nastiest 12v unit. A few more years of LED revisions and optic evolution are needed before LED headlamps fulfill the promise of better-than-standard
performance with lower-than-standard power consumption. Also, this headlamp has a polycarbonate lens. Those haven't ever held up well in the long haul in automotive headlamp lens service — raise your hand if you can't think of a car model with costly major-brand OE polycarbonate headlamps that nevertheless age fast and badly — so we have here an expensive headlamp with a "forever" light source and an age-prone, non-replaceable lens. The military doesn't care about cost of replacement headlamps! A year's service out of a polycarbonate lens is more than adequate as far as the military is concerned.
Then there is the fact that we're dealing with a multiple-emitter headlamp here. Multiple emitters w/multiple optics to create the different parts of the beam work fine when everything's aligned as it's meant to be, but if the various components are out of alignment — almost certainly the case in a mass-market, mass-produced lamp at this price point at this time — the beam formation and focus go all to hell. Two or three months ago, one of Truck-Lite's engineers told me this product is on optical revision 6.2 and would continue to improve. That kind of statement bears listening between the lines.