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aiming headlights

1.4K views 13 replies 8 participants last post by  cobie  
#1 ·
does anyone else find that (w/stock headlights) the the driver's side has a too-sharp cut off? Personally, i find it very annoying that my vision is limited by this cutoff. The right side isn't this way and i know it may have (allegedly) been done so as not to blind oncoming drivers but it's still a pain.

Any ideas how to correct this? I'm not sure if the lights can be aimed up at all. thanks
 
#3 ·
yes, i know, thanks, however, it's almost useless. the adjustments are too limited and one still gets that damn sharp cutoff w/o any benefits of seeing further down the road. I have aux. lighting so i can see waaay down the road, but the cut off is still a pain.
 
#4 ·
how far down the road does it cut off? Yes its meant to be aimed down more than the passenger side so you don't blind oncoming traffic. I would just make sure its within spec. I believe you can get a ticket for misaligned headlights as its part of the safety inspection.

I hate when people's headlights are not aligned correctly and are aimed up. Its almost as bad as the people who drive with their highbeams on. I put some brighter bulbs at 6,000k and the visibility is great even with the drop off on the driver's side. If you have stock bulbs still, I can understand it being harder to see.
 
#5 ·
your absolutely right. don't want to blind others. not nice. just hate the delinated light cut off instead of a 'fade' like the right headlight. guess i just have to live w/ it and be glad i have aux. lights that a 747 would love to have.
 
#6 ·
Probably something you already know and I may be going redundant here, but in my opinion, real distance lighting is not what you need in low beams, that's what high beams are for. If you look at anybody's mach hid output, it's great output right in front of the car and a bit ahead, but as far as distance goes, the cutoff is so sharp, if there aren't street lights, you see nothing. The high beams are very impressive, and do what they're supposed to, light up the road in the distance, as well as the sides of the road to see oncoming deer and whatnot.
 
#7 ·
^^^Well said.
 
#8 ·
davlafont said:
^^^Well said.

Why thank you lol. To be perfectly honest, I had to have this conversation with myself before I fully believed it, so the speech is rehearsed.:thumbup:
 
#10 ·
It's really an acquired taste. My wife HATES my headlights because the cut-off is so sharp. She prefers her van's lights, despite the fact that she can't see a damn thing compared to mine.

Today's lighting standards are supposed to strike a balance between the traditional european cut-off, and the US "glow" that also illuminates overhead signs. Most aftermarket projectors out there meet euro standards, not the "harmonized" universal standard.
 
#11 ·
davlafont said:
Today's lighting standards are supposed to strike a balance between the traditional European cut-off, and the US "glow" that also illuminates overhead signs.
No, todays US spec lighting is moving towards the superior euro lighting pattern. Not quite there yet.
davlafont said:
Most aftermarket projectors out there meet euro standards, not the "harmonized" universal standard.
Sure, since the euro spec is much better. And it is the global standard, for everywhere except NA (IIRC it is legal in a few states)

What's more, DOT has changed its regulations and there are now headlights which conform to both euro and DOT standards

The fact is that you should have max light up to the point where it creates glare, and very little after that (=> sharp cutoff). Unlike the DOT standard where you have less than optimal light where it doesn't create glare, and too much light where it does create glare.

Daniel Stern has a nice technical article on this issue,
http://www.danielsternlighting.com/nhtsa/NHTSA.html
he also has tons of nice info on his site
 
#12 ·
^^What he said.

Let me echo that Daniel Stern Lighting is a great resource for information. Wish our legislators would read some...
 
#13 ·
What I did was just adjust the lights up until people started flashing their brights at me. Then adjust them down a little at a time until you no longer get flashed.

You might annoy a few people but at least you end up with the optimal adjustment for your car.

The cutoff on the left light was a little annoying at first but I got used to it, I really don't mind it after driving the wifes minivan at night with it's sickly yellow halogens.
 
#14 ·
thanks for all the input, guys. I still think the lighting on most u.s. vehicles sucks. I know that my focus lights on low beam are terrible and the hi beams not much better. That's why i installed aux. lights and hooked them up to my hi beams. There's always that dreaded black space a certian distance down the road that you want to see into but cant w/ most oem lights on low or hi beam. The aux. lights take care of this. I mounted them behind the lower grill so they don't glare on-coming drivers, yet they do travel waaayyy down the road so i can see. When driving on rural, unlit roads near where i live it's important to see way ahead as deer and other critters seem to love play 'chicken' w/ cars.