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Anybody know headlight aiming rules for Michigan or in general?

AJMBLAZER

Better to be lucky than good.
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I put new headlights in The Blazer on Saturday and have been dinking with it since then. I'm trying to aim them correctly but not finding much guidance. Everyone seems to just do it to their own liking and call it good.:crazy: The closest I could find for Michigan is covered here:

http://rds.yahoo.com/_ylt=A0oGkxsvQ...nts/vehicle_equipment_requirements_8583_7.pdf

However the verbage is a bit vague, just listing distances they need to cover.
Headlights - Two or more, white, equipped with one on each side.
Minimum 24 inches, maximum 54 inches from ground.
Adjustable for upper and lower beam. Upper beam to reveal
persons 350 feet, lower beam to reveal persons 100 feet.
Beam indicator showing when upper beams are on; visible to
driver. No more than four lamps lighted at the same time.

Just aim them in so they beams are touching in low at 100' and in high at 350' ?:confused:
 
I usually drive up to a brick wall aka back side of store and use the bricks to help aim them in. I remember seeing instructions or tips in a Haynes manual for my blazer too
 
All of my manuals just say how to aim them...and that's about it.
 
I aim mine so I can see. My eyes ain't what they use to be.

Haven't had any trouble with johnny law about them...yet....:crazy:
 
Many many years ago, my state had auto inspections. One of the things they inspected was headlight aiming. I don't know what the law said, but after you got your lights set to the standard, it was downright dangerous to drive at night. Low beams were fine if you were looking for deer tracks at night, and high beams might show up a tall coon 50 feet down the road.
So, most folks adjusted them themselves after. Which, of course made things worse. Now you never knew what you were going to see next. One guy would be coming at you and you could hardly see him, and the next guy would be blinding you on dims.
I took my father's car out to a deserted stretch of highway in the woods. Adjusted the low beams to give a good view down the road with out being too blinding, and then adjusted the high beams to shoot level down the road and give max visual range. Four light system.
I also angled the right hand high beam slightly to the right to better pick up anything on the side of the road.
After a couple of tries, I had them set perfect. Low beams were kind to oncoming traffic, and high beams would show anything they were strong enough to reach.
Then, I went home, and drove the car up about 20 feet or so from the garage door. got out, and marked a spot on the driveway under the center of the front of the front bumper.
Turned on the headlight, and drew circles with a pencil on the door corresponding to the "hot spot" of all the light settings.
Then, every year, after they "fixed" the out of adjustment lights during the inspection, I would park at the same spot and reset them.
Worked great until one year I got careless. My mark on the concrete was just a scratch I had made with a nail, and I missed it. Parked over the wrong mark. Way closer that I should have been.
The next time we went out at night, it was nasty..
We met a semi on a curve with the dims on. They were about as high as brights should be. When he asked for dims, and my father hit the switch, you could see the poor driver sitting in the cab. Both lights were aimed that high.
We made sure not to use high beams again with anyone coming. We actually saw a pair of eyes in a tree once when we did. Coon I think.
Needless to say, I reset them that night when we got home.

For all the years we had inspections here, I never heard of anyone getting spot checked for headlight adjustment. I imagine if you set yours so they work good without being really annoying, they would tend to give you a pass.

J.
 
i use the brick wall method as well. takes a little trial and error depending on lift/tiresize etc. nice thing is if you note the number of bricks up you set to, you can always set it again next time.
 
wow,that is pretty useless info. i don't DD JR much anymore seppin to go to work. man i'm glad of that cuz my headlights are fuked. :laugh:hell the drivers side is zipped tied in right now.the screws fell out.too many trees i guess??:haha: good info fellas
 
Holy crap! Gotta go dig out my college algebra books!



I ended up going out last night and just counting 100' out from dad's barn door. Backed the truck into a pine tree 100' away and adjusted them so they were just illuminating the door about 2' up at that distance.

High beams took a bit more playing but I had to drop them a bit. They're about level and I could clearly see across mom and dad's 2.5 acre side lot.


Random note but you can definitely see a difference between a 70w H7 bulb and a 55w H7 bulb.
 
Holy crap! Gotta go dig out my college algebra books!



I ended up going out last night and just counting 100' out from dad's barn door. Backed the truck into a pine tree 100' away and adjusted them so they were just illuminating the door about 2' up at that distance.

High beams took a bit more playing but I had to drop them a bit. They're about level and I could clearly see across mom and dad's 2.5 acre side lot.


Random note but you can definitely see a difference between a 70w H7 bulb and a 55w H7 bulb.

I don't know 25 feet from the vehicle, a center line, height is the center of lamps for high beam and 4 inches lower for low? Doesn't seem to complicated to me. I used it and can see fine at night and I am not blinding other drivers because my lights are improperly adjusted? Sorry if I am sounding critical, I am not trying to. The instructions from daniel sterns sight is pretty straight forward?
 
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