Operation CHARM: Car repair manuals for everyone.

Horn: Adjustments

Horn Current Adjustment
^ Current limit-4.5 to 5.5 amps at 12 volts.
^ Adjustments should be made in 1/4 turn (90 degree) increments.
^ Loosen adjustment screw locknut
^ Increase current by rotating adjusting screw counterclockwise.
^ Decrease current by rotating adjusting screw clockwise.

Cold Weather Horn Current Adjustment
If the horn fails to sound in cold weather, it is possible that the current limit is set too low, although still within the amperage limit (4.5 to 5.5 amps at 12 volts). Turn the adjusting screw 1/4 turn (90 degrees) counterclockwise, to increase current draw, until the horn sounds.

IMPORTANT
^ This adjustment should not be made unless the horn fails to sound in cold weather. A current increase on a properly functioning horn could result in damage to the horn.