Current Adjustment

Horn Current Adjustment:

Current draw for a horn while operating should be 4.5 to 5.5 amperes at 11.5 to 12.5 volts. High current (more than 20 amperes) indicates an overheated winding, or shorted horn; replace horn. A current reading of about 18 amperes means the contact points are not opening; adjust the horn current.

No current reading indicates a broken lead or overheated horn. An overheated horn must be replaced. No current reading may also mean the contact points are open; adjust the horn.

Adjust
1. Increase Current - Turn adjusting screw clockwise.
2. Decrease Current - Turn adjusting screw counterclockwise.
3. Current adjustments should be made 1/4 mm (90°) at a time.