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Your purchase of a Wolo OCEAN ALERT

®

 Air Horn will complement your boat while offering an extra level 

of protection. Wolo’s products are manufactured with the finest materials. Before being packaged, each horn 
is tested to ensure it meets all of our manufacturing specifications. If you need help installing your new Wolo 
horn, our technicians are available to answer your questions, Monday thru Friday, 9 AM to 4 PM EST at  
1-888-550-HORN (4676).
Before installation of the horn is attempted, it is important to read these instructions completely. The lives of 
people can be dependent on a proper installation of the horn. The person doing the installation must have 
knowledge of the proper method for mounting and securing the horn to the exterior of the boat as well as 
knowledge of the boat’s electrical system. Again, read the instructions completely and note any messages 
marked 

“IMPORTANT” or “WARNING’’. A safe installation will prevent injury or damage to the boat.

WARNING: Installation of the OCEAN ALERT requires drilling. The installer must carefully inspect both sides 
of the selected mounting locations to ensure that there are no wires, fuel lines and or any other components 
that could be damaged by drilling. 
WARNING: If any wires are routed through drilled holes; always de-burr, ensuring that there are no sharp 
edges. Install a rubber grommet into all metal holes that wires are being routed through.

MOUNTING TRUMPET: Fig. 1 & 2

IMPORTANT: The horn should be mounted facing forward 
whenever possible. The NMMA Certification Program requires 
this for boats 39’ or longer.
1. Locate the desired mounting location of the trumpet. For 
best results, the front of the horn should be unobstructed so 
that the sound can carry straight ahead.
IMPORTANT: FOR BEST PERFORMANCE AND SOUND, 

ALWAYS MOUNT THE COMPRESSOR CLOSE TO 

TRUMPET, KEEPING THE HOSE LENGTH AS SHORT AS 

POSSIBLE. THE COMPRESSOR MUST BE MOUNTED IN A 

DRY INTERIOR LOCATION).
2. Use the horn’s gasket as a template, mark hole locations 
and drill to size. 
3. Thread the two chrome air inlet tubes into the base of the 
horn.
4. Mount and secure the horn as shown in Fig. 1. 

IMPORTANT: 

Be sure to use the rubber gasket provided to protect against 
water leaks. Tighten the base plate nuts that thread onto air 
inlet tubes evenly to ensure a watertight seal. 
5. Position the front trumpet support bracket around the narrow 
part of each trumpet. Push the bracket forward until it is tight. 
Using the bracket as a template, mark hole locations and drill 
to size, see fig 2.
6. Secure the front trumpet support bracket using the hardware provided. Tighten screw to ensure a watertight 
seal.  

IMPORTANT: Provided in the kit are two soft rubber strips that are placed into the ring of the support bracket to 
provide a tight fit and prevent vibration. Be sure to use the rubber gasket provided to protect against water leaks.

INSTALLATION INSTRUCTIONS
Model 170 OCEAN ALERT

®

 

12-Volt

air  

inlet  

tubes

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