Before you begin:
* Park your truck on a level surface: This is crucial for accurate adjustment.
* Measure the distance to the wall: You'll need a wall approximately 25 feet away for proper alignment. Mark the center point of your headlights on the wall.
* Turn on your headlights: Use low beams for adjustment.
General Adjustment Procedure:
1. Locate the adjustment screws: These are usually located on the back of the headlight housing. You'll typically find two screws for each headlight:
* Vertical Adjustment: Controls the up and down aim.
* Horizontal Adjustment: Controls the left and right aim.
2. Access the screws: This is where it gets tricky and varies by year. You might need a small screwdriver, possibly a Phillips head. You may need to remove a cover or access panel to reach them. Consult your owner's manual or search online for diagrams specific to your S-10's year and model. Some S-10s require removing parts of the front end for access.
3. Make adjustments: Use the screws to fine-tune the beam pattern.
* Vertical Adjustment: Turning the screw clockwise usually raises the beam, while counter-clockwise lowers it.
* Horizontal Adjustment: Turning the screw clockwise usually moves the beam to the right, and counter-clockwise moves it to the left.
4. Check your work: After each adjustment, check the beam pattern on the wall. Aim for the low beam cutoff to be roughly level or slightly below the center point you marked. Avoid shining the headlights too high, as this can blind oncoming drivers.
5. Repeat as necessary: Continue making small adjustments until the beams are properly aligned. It's often easier to make small adjustments and then check the wall, rather than making large adjustments at once.
Important Considerations:
* Owner's Manual: Your owner's manual is the best resource for specific instructions. It will provide diagrams and clear explanations for your particular S-10 model year.
* Online Resources: Search online for "S-10 headlight adjustment [your year]" to find videos or diagrams that show the exact procedure for your truck.
* Professional Help: If you're uncomfortable working on your vehicle, consider taking it to a mechanic. They'll have the proper tools and expertise to adjust your headlights correctly.
Remember safety first. If you are unsure about any step, seek professional assistance. Improperly adjusted headlights can be a safety hazard for yourself and other drivers.
