This is a DIY on how to adjust your headlight beams.
I know some of you with HID's are having problems aiming them and some of you just want to know exactly how to aim the headlights so I decided to do this.
Please note that since I have HIDís, those of you with stock lights will see a different beam than shown in the pics but the directions donít change.
Also note that most of the pics donít represent exact measurements, but were created to give you a better idea. I was using mspaint and not having pics to scale didnít help. NOTE: Coupe housings do not have an adjustment gear for left/right aim.
You will need the following:
1. A stolen towel from the MGM Grand (or something to cover one headlight housing)
2. A long Phillips head screwdriver (mine is 8Ē long)
3. A flashlight (not mandatory, but helps)
4. A tape measure (or something that can go 25ft.)
First, you need to find yourself a dark, flat, open area with a wall thatís hopefully white.
Using your tape measure, move your car back so that it is 25ft away and perpendicular to the wall.
With the tape measure running down to the middle of the car, draw a vertical line on the wall to represent the center or middle.
Now you need to take 3 measurements:
1. Measure end to end using the middle of the headlight bulbs as the ends.
2. From the ground up to where the bulb is.
3. From one end to the center of the car.
I took some measurements but they are only estimates because I didnít have a friend to help me on this part.
1. Roughly 44 inches.
2. Roughly 22 inches.
3. Roughly 37 inches.
Using the vertical line you drew on the wall as the centerline, draw lines using the measurements you took.
DRAW MEASUREMENT 2 2 INCHES LOWER THAN MEASURED.
Now to show you guys how to adjust the beam left/right and up/down.
These directions relate to the driverís side. For the passenger side, just flip the left/right directions regarding where to find the gears.
First, letís find the gear to adjust the beam left and right.
The gear is on the left side of the housing. It may be hard to find because the frame of the car is blocking it. The screwdriver has to be put through a hole on the frame to reach.
The following pics should explain it all.
If you look closer at the housing, youíll notice that molded into the housing are 2 arrows with L and R next to them to show you which direction does what.
Turning the screwdriver clockwise moves the beam left.
Turning the screwdriver counterclockwise moves it right.
Now to find the gear to adjust up/down. This is on the right side of the housing.
Youíll also notice that there is a picture molded near the gear.
Turning the screwdriver clockwise moves the beam up.
Turning the screwdriver counterclockwise moves it down.
Now that youíre all prepared and know what to do, lets aim them.
The lines drawn on the wall is going to be used to aim the beam.
The following picture shows how you need to aim them.
Cover one housing with the towel so you can see/find the cut off lines better.
With HIDís in a NON-HID housing, finding the cut off lines is very hard / almost impossible. I drew cut off lines higher than they really are so you can see better.
Something you should know
The headlight bulbs arenít held in place with Superman tightness. They can move left and right. This might be a factor as to why your beam might not look as good. The video BulbMovement available for download at the link at the bottom shows you what I mean.
This applies for any bulb, HID or stock or aftermarket H4. How to correct it?
Sorry, Iím not sure about this one. Donít have time to check. Someone check and tell me.
Now on to some pics to show off the HIDs =)
Camera 25 feet away on the ground
Camera about 6 feet right
Camera about 6 feet left
You can go HERE
and d/l some videos I made.
HID = Camera 25 feet away on the ground.
HIDHighLow = Camera 25 feet away on the ground with me flicking the high beams.
HIDWall = Camera in drivers seat with me flicking the high beams.