The current draw for a horn while operating is 4.5-5.5 amperes
at 11.5-12.5 volts. Review the following common conditions:
| • | A high current of more than 20 amperes indicates an overheated
winding or indicates a shorted horn. Replace the horn. |
| • | A current reading of about 18 amperes means the contact
points are not opening. Adjust the horn. |
| • | No current reading indicates one of the following: |
| • | An open circuit due to a broken lead |
| • | An open circuit due to an overheated horn |
| • | The contact points are open. Adjust the horn |
| • | If the horn fails to sound in cold weather, the current may be
set too low, although the current still may be within the ampere 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. |
Perform the necessary steps in order to adjust the current:
| • | Turn the adjustment screw clockwise 1/4 turn (90 degrees)
at a time in order to increase the current. |
| • | Turn the adjustment screw counterclockwise 1/4 turn (90 degrees)
in order to decrease the current. |
