Testing

1. Disconnect wire connector at each horn.

Horn:

2. Using a voltmeter, connect one lead to body ground and the other lead to the positive wire terminal of the horn connector.
The right horn is grounded on the front outboard side of the right frame rail. The left born is grounded on the left front fender apron.
3. When the horn switch is depressed, battery voltage should be present. Repeat for the other horn.
4. If no voltage, repair as necessary. If battery voltage is present, go to next step.
5. Using an ohmmeter, test the negative terminal of the connector for continuity to ground. Repeat for the other horn.
6. If no ground, repair as necessary.
7. If wires test OK and horn(s) does not sound, replace horn(s).


System Test

CAUTION: Continuous sounding of horns may cause horn relay to fail

Check fuse 18 in the Junction Block and fuse L in the Power Distribution Center. Refer to Horn System Test table.