Aim your lights

[elag]

Really simple way to aim your light. Go out at night. Find a nice straight country road with very little traffic. Switch to high beam and adjust the light til' you can see as far a possible (while sitting with most of your weight on the bike. Do it 2up if you usually ride with a passenger). When you switch back to low beam you should then be able to see only a couple of hundred feet ahead. Works for me. I have HID installed and have yet to get flashed.

[greg_in_london]

Can't you see the effect of your headlights on cars ???

If you're following a car at a reasonable distance, then every now and then you should see the reflective number plate light up as you hit bumps (do you have reflective number plates over there ?) When you're closer, you should see the cut-off line of the dip beam across the boot of the car. If the interior of the car is all lit up, or you can see the wing mirrors getting lit, then your headlight is too high.

As was said above, an easy check is to face a wall 30-40 m away in the dark and ensure that the light reaches the bottom of the wall, but does not come very far up it - certainly lower than the headlamp. That way you know it is pointing down.

If you're concerned, use the measurements above, but you should be able to check for yourself if you're loaded more than usual by the effect of the light on the road and vehicles ahead.

[muaymendez1]

The tour classic I have is adjusted by 2 screws left and right just below center line. They dont control movement around horizontal or lateral axis . You have to turn both. It is hinged at top and in unison turning them in lowers the light. If there is too much turned in on one side it is still lower but right pushes light right and vise versa.
I had to re adjust mine tonight after some one kept stabbing the brakes. They were really off. Now they are about 2 feet high at 30 feet.
looks good to me.

[67mini67]

I have adjusted mine using a car in front of me. The majority of the light should hit the trunk area ( or just below the bottom of the rear window) and slightly above the license plate. This works great on most mid to standard size vehicles. This way I know my light is shooting right through the rear window into the mirror but give nice distance. I do it this way because I am lazy and rarely have a helper. The measurements given above I have used on cages and works fine.

[JohnMidnight]

What we do is I put myself roughly 2-3 CAR LENGTHS away from a wall, and my dad puts up a white sheet (BE LEVEL!). I turn on the high beam and orient the beam. With a YVRMK2 you can see the center line, use that as your guide. Done right, when you go low beam it'll be just right. (Best to do it while your sitting on the bike and the bike is also leveled up)

Not sure if it works with all H4s, I've got a H4 Phillips that I am SO throwing away, and getting something better (and aux lights... I want to ride at night.... want... want... want.... but can't..)

Around here, its not other motorcyclists you have to worry about blinding you.
Its the drivers. No one seems to know how to align their lights properly for any vehicle they drive, except for semi trucks... for some odd reason those are 9/10 correct....... better than cars 4/10 or trucks 6/20.