headlight aim

You have to remove the headlight cover. The adjustment for up and down is on the outside of the headlight. You have to find a philips head screw driver to adjust it. You will find a wheel gear cogs. You want to find the best fitting screwdriver so you don't strip the teeths. You will need a fairly large head philips. I forgot which way to screw it to adjust it upwards.
 
You will want to spray some lubricant on the gear so it will turn smoothly. Some people have had problems with it being seized and the gear breaking. If it is broken you will have to try a different method with a locking vise grip pliers.
 
vsy05 is correct on the basic procedure to adjust the NSX headlight aim. Although I have adjusted my 1996 NSX headlights to the highest position they are still too low.

Go to the Wiki link on the NSX Prime front page and search for the 1991 Service Manual; the headlight height adjustment procedure is on page 23-188
 
thanks for the tips. they were very helpful. however, i found that it was easeir to make the adjustment if you remove the headlight assembly to get at the cogs that must be turned to adjust the vertical alignment. otherwise, if you just trying to turn the cog without removing the assembly, it's difficult to tell if the cog is actually turning as your turn your screwdriver. maybe its just me but i thought i would pass that tip along.
 
To adjust headlights, I have the headlights face a wall (or other fixed stationary surface) and mark the existing beam location on the wall with a piece of tape. Then I adjust the lights and watch the movement from the original location as I make the adjustments. Take a test drive and repeat as needed.
 
thanks for the tip with the tape. i was thinking about doing that but the wall the my car faces in my garage is made of cinder blocks so i basically used the lines between the cinder blocks to measure the vertical aim of the headlight beam. however, if the wall was just a plain surface, i most certainly would have gone the tape route.

at this point, i have the headlights set to the highest vertical position but it STILL appears to be aiming somewhat low. i mean i dont want to blind oncoming drivers with an aim that is too high but imo, it does still seem a little low. does anyone else have this issue?

on a side note, when my beam is aim to the wall, the top of the beam creates a jagged pattern. at first i thought it was because the beam was being cutoff by the headlight cover but i took the cover off and still saw the same jagged beam pattern on the wall. does anyone else have this issue as well? maybe ill take some pictures and post to illustate this problem as a written description is probably pretty vague.
 
... the beam creates a jagged pattern. at first i thought it was because the beam was being cutoff by the headlight cover but i took the cover off and still saw the same jagged beam pattern on the wall.

Is the lamp secured inside of the headlight lense housing? If it is not casting a focused beam it is likely due to the fittment of the lamp inside the reflector.
 
on a side note, when my beam is aim to the wall, the top of the beam creates a jagged pattern. at first i thought it was because the beam was being cutoff by the headlight cover but i took the cover off and still saw the same jagged beam pattern on the wall. does anyone else have this issue as well? maybe ill take some pictures and post to illustate this problem as a written description is probably pretty vague.

i finally had a chance to take pictures of the jagged headlight pattern that i was previously referring to...its kinda hard to see (took the pic with my iphone) but the headbeam makes a jagged pattern on the wall...think staircase or tetris with uneven blocks. anyone have any idea what is causing this?
 

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I know this was posted a long time ago, but the jagged pattern is there on purpose. It's a shroud in the headlight assembly and it rises on the right side allow enough light to illuminate road signs, which are on the right for left hand drive cars. If you look at the pattern in countries were the cars are right hand drive, you will see the exact opposite jagged cut off.
 
i finally had a chance to take pictures of the jagged headlight pattern that i was previously referring to...its kinda hard to see (took the pic with my iphone) but the headbeam makes a jagged pattern on the wall...think staircase or tetris with uneven blocks. anyone have any idea what is causing this?

I know this was posted a long time ago, but the jagged pattern is there on purpose. It's a shroud in the headlight assembly and it rises on the right side allow enough light to illuminate road signs, which are on the right for left hand drive cars. If you look at the pattern in countries were the cars are right hand drive, you will see the exact opposite jagged cut off.

Yes this is correct. The "steps" are there on purpose. It does look, however, that your Left headlight is aimed a little low. The really bright spot on the left should be at the same level as the bright spot on the right.

I have found that the gear aiming using the screwdriver is best for doing fine too adjusting. If your lights are really far aimed down, loosen the 4 bolts that hold the headlight to the housing. Tilt the headlight back and retighten, then use the fine tuning screws to get it to the position you want.
 
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i finally had a chance to take pictures of the jagged headlight pattern that i was previously referring to...its kinda hard to see (took the pic with my iphone) but the headbeam makes a jagged pattern on the wall...think staircase or tetris with uneven blocks. anyone have any idea what is causing this?

The pattern seems normal. HID's seem to aim much lower for some reason.
 
The step is normal and there for the purpose of keeping the cutoff in favor of the passenger side thus not blinding oncoming traffic.

I hate the light distribution with my aftermarket hids on this car.

Has anyone done a retrofit on these cars?

For example this is the one I did on my S40 that was previously halogen headlights.
DSCN0815.jpg


I didn't step these shields just kept the cutoff a bit lower than normal.
 
take the whole light assembly out?? what???


my dad always says, "you dont take the engine out to do an oil change".

Over kill i think
 
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