Headlight Question
For the HEADLIGHTS... Which moves them up and down? There is a post here that instructs how to but for euro headlights. It is confusing. Are there three points where the lights can be aimed? Thanks for your time
P.S- My headlights are aimed wayyy too low and my passenger fog light is aimed wayyyy to low. Thanks





P.S- My headlights are aimed wayyy too low and my passenger fog light is aimed wayyyy to low. Thanks
the long golden rod will move the headlights up and down.


Aiming your Head Lights
Preparation:
Prepare the aiming area. You can use the garage wall providing its at least 25’ from the car and the ground is level.
Mark some calibration lines using chalk or masking tape:
Find the center of the headlight and measure the distance to the ground. Mark a horizontal line on the surface (garage door or wall) using masking tape at the same distance from the ground.
Stick a piece of tape in the center of the windscreen and another on the rear glass to use as reference marks.
Line these up from behind the car and use them to mark the centerline of the car on the .
Measure the distance between the center of both headlight lenses and use this to measure from the center point you just marked on the surface.
Make sure the tire pressures are correct and the tank is full or the calibration may be out. Park the vehicle square with the aiming surface. Close the doors and rock the car to stabilise the suspension.
Adjustment
Horizontal and vertical aiming is done by moving the adjusting screws which moves the headlamp capsule in relation to the headlamp frame. The horizontal adjustment screw is located on the inboard side of each of the headlight assemblies and covered by a plug. The vertical adjustment screw is located on the inboard side of each of the headlight assemblies below the lower edge of the headlamp bezel. Its a long golden rod. I think it’s a #15 torx.
Raise the hood.
Raise the headlamps.
Remove the headlamp adjustment screw plug from the headlamp bezel. Reach under the headlamp bezel and push out the plug from behind.
Turn ON the low beam lamps. Block the light from the passenger lamp to allow you to adjust the drivers lamp. Don’t cover the headlight or it may get too hot.
Inspect the horizontal aim. Make the adjustments with reference to the lines and numbers on the aiming chart below
Adjust the aim using the horizontal adjusting screw, to align the break point (3) of the high intensity zone to the headlamp vertical centerline (1), within the range of 38 mm (1.5 in) to the left (5) of the lamp vertical centerline (1), to 38 mm (1.5 in) to the right (4) of the lamp vertical centerline (1) on the aiming screen.

Inspect the vertical aim.
Adjust the aim using the vertical adjusting screw, to align the upper edge of the beam horizontal cut off line 114 mm (4.5 in) below (7) the headlamp horizontal centerline (2), within the range of 76 mm (3 in) below (8) the lamp horizontal centerline (2), to 191 mm (7.5 in) below (6) the lamp horizontal centerline (2) on the aiming screen.
Install the headlamp adjustment screw plug. Push to secure.
Turn OFF the headlamps.
Lower the hood.
Your light pattern should look roughly like this when you’re done.
Last edited by DeeGee; Mar 14, 2008 at 01:59 PM.


There is no horizontal aiming for the C5 foglamps
Preparation:
Prepare the aiming area. You can use the garage wall providing its at least 25’ from the car and the ground is level. Make sure the tire pressures are correct and the tank is full or the calibration may be out. Park the vehicle square with the aiming surface. Close the doors and rock the car to stabilise the suspension.
Mark some calibration lines using chalk or masking tape:
Find the center of the headlight and measure the distance to the ground. Mark a horizontal line on the surface (garage door or wall) using masking tape at the same distance from the ground.
Stick a piece of tape in the center of the windscreen and another on the rear glass to use as reference marks.
Line these up from behind the car and use them to mark the centerline of the car on the wall.
Measure the distance between the center of both headlight lenses and use this to measure from the center point you just marked on the surface.
Adjustment
Raise the hood.
Raise the headlamps.
Turn ON the low beam lamps. Block the light from both headlamps to allow you to adjust the fog lights. Don’t cover the headlights or they may get too hot.
Turn on the fog lamps
Insert a torx driver through the front fascia deflector access hole to reach the fog lamp vertical adjustment screw
Adjust the fog lamp up or down until the top edge of the high intensity zone is 4” below the horizontal centre line.

Turn off all the lights

As for the headlights:

I used this picture to describe something to someone else but you get the gist of it. Whatever you do, don't turn any of the headlight adjusting screws without lubing them first!!! There is no fix after you break the adjusting screw. You have to buy another headlight at a whopping $700 give or take!
Last edited by Junkman2008; Mar 14, 2008 at 05:37 AM.
The Best of Corvette for Corvette Enthusiasts




Aiming your Head Lights
Preparation:
Prepare the aiming area. You can use the garage wall providing its at least 25’ from the car and the ground is level.
Mark some calibration lines using chalk or masking tape:
Find the center of the headlight and measure the distance to the ground. Mark a horizontal line on the surface (garage door or wall) using masking tape at the same distance from the ground.
Stick a piece of tape in the center of the windscreen and another on the rear glass to use as reference marks.
Line these up from behind the car and use them to mark the centerline of the car on the wall.
Measure the distance between the center of both headlight lenses and use this to measure from the center point you just marked on the surface.
Make sure the tire pressures are correct and the tank is full or the calibration may be out. Park the vehicle square with the aiming surface. Close the doors and rock the car to stabilise the suspension.
Adjustment
Horizontal and vertical aiming is done by moving the adjusting screws which moves the headlamp capsule in relation to the headlamp frame. The horizontal adjustment screw is located on the inboard side of each of the headlight assemblies and covered by a plug. The vertical adjustment screw is located on the inboard side of each of the headlight assemblies below the lower edge of the headlamp bezel. Its a long golden rod. I think it’s a #15 torx.

Raise the hood.
Raise the headlamps.
Remove the headlamp adjustment screw plug from the headlamp bezel. Reach under the headlamp bezel and push out the plug from behind.
Turn ON the low beam lamps. Block the light from the passenger lamp to allow you to adjust the drivers lamp. Don’t cover the headlight or it may get too hot.
Inspect the horizontal aim. Make the adjustments with reference to the lines and numbers on the aiming chart below
Adjust the aim using the horizontal adjusting screw, to align the break point (3) of the high intensity zone to the headlamp vertical centerline (1), within the range of 38 mm (1.5 in) to the left (5) of the lamp vertical centerline (1), to 38 mm (1.5 in) to the right (4) of the lamp vertical centerline (1) on the aiming screen.

Inspect the vertical aim.
Adjust the aim using the vertical adjusting screw, to align the upper edge of the beam horizontal cut off line 114 mm (4.5 in) below (7) the headlamp horizontal centerline (2), within the range of 76 mm (3 in) below (8) the lamp horizontal centerline (2), to 191 mm (7.5 in) below (6) the lamp horizontal centerline (2) on the aiming screen.
Install the headlamp adjustment screw plug. Push to secure.
Turn OFF the headlamps.
Lower the hood.
Your light pattern should look roughly like this when you’re done.

Fog Lamp Aiming
There is no horizontal aiming for the C5 foglamps
Preparation:
Prepare the aiming area. You can use the garage wall providing its at least 25’ from the car and the ground is level. Make sure the tire pressures are correct and the tank is full or the calibration may be out. Park the vehicle square with the aiming surface. Close the doors and rock the car to stabilise the suspension.
Mark some calibration lines using chalk or masking tape:
Find the center of the headlight and measure the distance to the ground. Mark a horizontal line on the surface (garage door or wall) using masking tape at the same distance from the ground.
Stick a piece of tape in the center of the windscreen and another on the rear glass to use as reference marks.
Line these up from behind the car and use them to mark the centerline of the car on the wall.
Measure the distance between the center of both headlight lenses and use this to measure from the center point you just marked on the surface.
Adjustment
Raise the hood.
Raise the headlamps.
Turn ON the low beam lamps. Block the light from both headlamps to allow you to adjust the fog lights. Don’t cover the headlights or they may get too hot.
Turn on the fog lamps
Insert a torx driver through the front fascia deflector access hole to reach the fog lamp vertical adjustment screw

Adjust the fog lamp up or down until the top edge of the high intensity zone is 4” below the horizontal centre line.

Turn off all the lights

As for the headlights:

I used this picture to describe something to someone else but you get the gist of it. Whatever you do, don't turn any of the headlight adjusting screws without lubing them first!!! There is no fix after you break the adjusting screw. You have to buy another headlight at a whopping $700 give or take!
Any thoughts on using this process?
One other thing - the long Golden Rod apparently controls the vertical adjustment. I understand there is a shorter screw controlling the horizontal. Does that shorter screw have the same problems the longer Golden Rod does?
Last edited by Hooker; Dec 15, 2008 at 10:19 PM.












