this one even better then U bracket but still leaves me w/ the problem of not holding well when there is no power, + construction is some what flimzu so on bumpy road light beam will jump like crazy
You actually want to install this in your cars head lamps?
It will be highly illegal, will ruin the lamps completely and give you much less light to move around.
Insanity aside... If you really want to move your light around, a much better solution would be to move the lamp (bulb) around within the housing. This would take only small movements, directly up, down, left and right, to cast the beam at different angles.
However you do it, make sure it's sealed against moisture, or the mirror finish of the parabolic reflector will be ruined in a short time.