For 1990-2009 cars

Adjust the horn current until the horn current is between 4.5 amps and 5.5 amps (12 volts).

• | Perform the adjustments in ¼ turn (90 degree) increments.

• | Loosen the adjustment screw locknut.

• | Turn the adjusting screw (2) counterclockwise in order to increase the current.

• | Turn the adjusting screw (2) clockwise in order to decrease the current.

### Cold Weather Adjustment

• | If the horn (3) fails to sound in cold weather, the current limit may be set too low, even if the horn (3) is still within the amperage limit. Do not make this adjustment unless the horn fails to sound in cold weather. A current increase on a properly functioning horn may result in damage to the horn.

• | Turn the adjusting screw (2) ¼ turn (90 degrees) counterclockwise in order to increase the current draw until the horn sounds.