Accurate aiming of auxiliary lights is crucial during installation. It is the most critical aspect. Inadequately aimed lights hinder their optimal performance. And they also pose significant risks.

The danger arises when the light beam pattern is directed toward oncoming traffic. This has the potential to cause blindness to oncoming drivers.

Auxiliary Fog Lights

Auxiliary fog lights are commonly installed beneath the front bumper. They are positioned approximately 10 to 24 inches above the ground. When installing these lights, it is crucial to address two key concerns. 

Firstly, the aim should be to reduce the amount of glare that reflects back into the driver’s eyes. Secondly, it is important to minimize the potential glare.

As they could affect oncoming drivers. Both objectives must be achieved while maximizing the illumination of the road ahead.

The provided fog light aiming instructions are based on common practices. It also follows the standard J583 set by the Society of Automotive Engineers (S.A.E.).

Certain adjustments may be required to cut glare while following these guidelines.

Position your vehicle on a level surface approximately 25 feet away from a wall. Measure and note the distance between the ground and the center of the auxiliary light. Mark a horizontal line on the wall at the same height as the measurement taken.

Ensure that the top of the fog light beam is positioned 4 inches below the center of the lamp. It should be within that range when the vehicle is 25 feet away from the wall. The fog lamp should be facing directly forward during this change.

Auxiliary Driving Lights

Generally, driving lights are installed above the front bumper. They are approximately 14 to 30 inches above the ground. This placement is intended to offer more high-beam illumination.

It is possible to mount driving lights below the bumper. But their effectiveness may be compromised. When mounted lower, the light beam will reach the ground earlier. So it results in a reduced range of illumination.

Park your vehicle on a level surface approximately 25 feet away from a wall. Measure the distance between the ground and the center of the auxiliary light.

And then mark a horizontal line on the wall at that same height. This will serve as a reference point for the aiming procedure.

The center of the driving beam’s hot spot should be positioned 1.5 inches below the center of the lamp. This change is performed when the vehicle is positioned 25 feet away from a target. This is when the lamp facing directly forward.