PIAA 525 Series - Manual (Page 6)

LAMP SERVICE
DRIVING LIGHT
AIMING
To open the 525 lamp press the lens release button
at the bottom of the lamp next to the mounting bolt.
Turn the lens counterclockwise until the arrows line up.
The PIAA 525 lamp comes preassembled and ready to use.
The only reasons to disassemble the lamp is to change the bulb.
Typically, driving lights are mounted above the front bumper about 14-30 inches
from the ground to provide extra high beam illumination. Driving lights can be
mounted below the bumper, although they will not be as effective because the
light will hit the ground sooner and reduce the range of the light.
Visual aim is made with the center of the beam hot spot 1.5 inches below the
lamp center at 25 feet with the lamp facing straight forward. (see below.)
Do not use driving lights into oncoming traffic.
Driving lights should never be the only foreword light source.
Driving lights should only be used with the headlamp high beams.
5.