OAR 735-108-0073
Mounting, Wiring and Aiming of Front Fog Lamps for Motor Vehicles

(1)

Transportation Safety adopts the mounting requirements for front fog lamps as follows:

(a)

If one lamp is installed, mount the lamp on the left side of the motor vehicle;

(b)

If two lamps are installed, mount the lamps symmetrically around the front centerline of the motor vehicle;

(c)

Mount the lamps not less than 12 inches (30.5 cm) nor more than 30 inches (76.2 cm) above the level ground;

(d)

Measure the mounting height from ground level to the center of the lens of the lamp;

(e)

Do not mount the lamps so they interfere with required motor vehicle lighting; and

(f)

Do not mount the lamps higher than the motor vehicle headlight system.

(2)

Transportation Safety adopts the wiring requirements for motor vehicle front fog lamps as follows:

(a)

Front fog lamps shall be wired so they can only come on when the motor vehicle low beam headlights are on; and

(b)

A switch shall be installed so front fog lamps can be turned off or on leaving the low beam of the headlights on; and

(c)

A steady burning indicator light shall be wired so it comes on when the front fog lamps are turned on and mounted in a location it is readily visible to the driver.

(3)

Transportation Safety adopts the aiming requirements for motor vehicle front fog lamps as follows:

(a)

Adjust lamps to a setting of 0-0 when using a mechanical aimer; or

(b)

When using a visual aiming screen, the beam is to be centered laterally about the vertical axis and aim the top of the beam 4 inches (100 mm) below horizontal axis at a distance of 25 feet (7.6 m) from the lens.

Source: Rule 735-108-0073 — Mounting, Wiring and Aiming of Front Fog Lamps for Motor Vehicles, https://secure.­sos.­state.­or.­us/oard/view.­action?ruleNumber=735-108-0073.

Last Updated

Jun. 8, 2021

Rule 735-108-0073’s source at or​.us