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Troubleshooting
Horns
• The horns won't honk
o Check the air tank for air pressure. If your air gauge reads 0 PSI, refer to the steps on page 12 to
remedy the lack of air in the tank.
o Check the wiring for the horn solenoid valve. If the valve has a loose ground connection, it will not work
properly. Make sure the valve is connected to your activation switch.
o Check the power source for the horn activation. Use a test light or voltmeter to check for +12v on the
lead coming from your stock horn wire or power source. Make sure power is coming into and out of the
activation switch/button.
• The horns don't sound right
o If your horns start to squeak or sound high-pitched, drain the tank. Moisture buildup in the tank is finding
it's way from the tank into your horns. This causes them to squeak.
Drain the tank of moisture. Disconnect the lines from each horn bell but leave them connected to
the 4-way. Let the tank build pressure and then press the horn button. The rush of air through
the lines will remove excess moisture.
o Check and ensure the end of each bell isn't obstructed or blocked. The horns will sound off at a different
pitch when the opening of the bell is blocked.
• The horn honks on it's own as soon as it is wired up
o This is a tricky problem to fix and can be confusing to most. On some vehicles, the stock horn receives
a constant feed of power from the battery. When the wheel is pressed, a switch inside the steering
wheel creates the ground for the horn circuit and the horn honks. When you wire your OEM horn wire to
our valve, the valve ground completes the circuit and causes the constant honk.
We can fix this problem by following these steps:
1. Disconnect the valve ground from the frame.
2. Splice from the OEM horn NEGATIVE lead and route this to the toggle switch.
3. Connect the opposite lead of the toggle to the black wire on the valve.
This makes it so that the valve is actuated from the negative side of the OEM wiring. If you have
trouble with this, give our team a call @ (877)-209-8179.
o Make sure the valve isn't connected to a constant power source. If the valve is receiving power
constantly, it will stay open.
• It sounds like the horns are going off at different times
o Check the length's of each air line from the 4-way splitter to each bell. If these lines are not equal length,
the horns will sound off at different times. This is not ideal.
Check and ensure each air line is secure in the elbow fittings. If one line is loose or
disconnected, the other horns will sound muffled due to the loss of air pressure.
Can't find your issue listed above? Give our team a call @
(877)-209-8179 or shoot us an email to sales@hornblasters.com
www.hornblasters.com
support@hornblasters.com
Page 13
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