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Aiming Your Stock Fog Lamps
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Aiming the factory fog lamps for better usage is very easy to do.
The following tools were used to make the modification.
Let's Get Started
** Use caution when working around the fog
lamps. They use a Halogen bulb which gets extremely hot in a very short
period of time. Touching the fog lamp lenses during or after operation may
result in serious burns. **
Halogen Bulb Caution
Halogen bulbs contain gas under pressure. Handling a bulb improperly could
cause it to shatter into flying glass fragments. To help avoid personal
- Turn off the lamp switch and allow the bulb to cool before changing
the bulb. Leave the: lamp switch off until the bulb change is complete.
- Always wear eye protection when changing a halogen bulb.
- Handle the bulb only by its base. Avoid touching the glass.
- Do not drop or scratch the bulb.
- Keep dirt and moisture off the bulb.
- Place the used bulb in the new bulb's carton and dispose of it
- Keep halogen bulbs out of the reach of children.
This image shows the drivers side fog lamp being adjusted.You will
need a #T-15 torx screw driver. (You'll probably need a dedicated #T-15
torx screw driver, not one of those screw drivers that has the
interchangeable bits because the adjustment screw hole is too small for
shaft of the screw driver to fit in and the adjustment screw is recessed
too deep to reach with just the #T-15 torx bit.) The adjustment screw is
accessed from the round hole on the outboard side of the fog lamp. You
might want to shine a flashlight in the hole to locate the adjustment
screw because it
will most likely not be perfectly centered in the hole. Give the adjustment screw
four full turns in the clockwise direction. This should get you in the
ball park, adjust to your preference from here.
This image shows the passengers side fog lamp being adjusted.
Same procedure for the passengers side. Access the adjustment screw
from the round hole on the outboard side of the fog lamp. You might want
to shine a flashlight in the hole to locate the adjustment screw because
it will most likely not be perfectly centered in the hole. Insert the
insert the #T-15 torx screw driver into the adjustment screw and give the
adjustment screw four full turns in the clockwise direction. This should
get you in the ball park, adjust to your preference from
Adjusted fog lights only.
Adjusted fog lights and head lights.
To test the adjustment, park the car about 10 - 20 feet from a wall or
garage door. Turn on the headlights (low beam) using the switch located at
the end of the turn signal lever. Take note how high the headlights shine
on the wall/door. Now turn the headlights off but leave the parking lights
turned on, turn the fog lamps on and compare where the top of the fog lamp
beam of light is with respect to the headlight beam of light. I found that
adjusting the fog lamps so that the top of the beam of light from the fog
lamp (FYI: the stock fog lamps project a very flat but wide beam of light)
was at the bottom edge of where the headlight beam was the brightest. Fine
tune adjustment to personal preference.
information in this "Do It Yourself" article were provided by Corvette
Accessories Unlimited, LLC, and the original page can be found here. They have been re-posted on this
C5Forum.com with permission.
This page was last updated on 05/28/01 by Redshift