Operation CHARM: Car repair manuals for everyone.

Horn: Adjustments

Turn the adjusting screw clockwise to increase current or counterclockwise to decrease current until the specified current is reached. Care must be taken not to turn the adjusting screw too far. Turn the screw 90 degrees at a time. If adjustment loosens the screw excessively, it may be staked with a punch.

Cold Weather Adjustment
If the horns fails to operate in cold weather, it is possible that the current limit is set too low, although still within the 4.5 to 5.5 ampere limit for each horn at 12.0 volts.

NOTE: This adjustment should not be made unless the horns fall to operate. A current Increase on a properly operating horn can result in complete malfunction of the horn.

Adjust
1. To increase current, rotate the adjusting screw in the clockwise direction.
2. To decrease current, rotate the adjusting screw in the counterclockwise direction.
^ Current limit: 4.5 amperes at 12.0 volts.
3. Adjustments should be made at 90 degree intervals.