Wolo 170 User Manual

INSTALLATION INSTRUCTIONS
Model 170-24 OCEAN ALERT™
24-Volt

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.

air

inlet

tubes

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.

COMPRESSOR INSTALLATION: Fig. 3 & 4

7. Install the compressor in a dry interior location. IMPORTANT: The compressor
should not be mounted further than 30 inches from the trumpet to ensure best sound.

8. To secure the compressor, drill one 3/16”
hole. When possible, mount the compressor
vertically (air outlet on top). Install the head
of the bolt into the mounting bracket’s slot
on the side of the compressor. Secure
the compressor using the lock washer/nut
provided as shown in Fig. 3.

air

9. Using the plastic tubing provided, cut to
size, connect the compressor to the two air

inlet

tubes
inlets using the “Y” connector provided as
shown in Fig. 4.

WARNING: Avoid making any kinks or
sharp bends in plastic tubing that can
reduce air flow and alter the horn’s sound.
For best performance and sound always
keep the plastic tubing as short as possible.

WIRING:

ELECTRICAL CONNECTIONS FOR USING A NEW HORN BUTTON SWITCH Fig. 5

10. Install the horn relay provided, in a dry interior location with the terminals facing downward.

11. Connect relay terminal 87 to the compressor’s positive (+) terminal. Use 16-gauge wire or heavier.

12. Connect relay terminal 85 to the horn button switch terminal. (Horn switch not provided).

13. The horn switch’s other terminal is connected to negative (-) such as the (-) battery post or any clean metal
negative surface. Use 18 gauge wire or
heavier.

14. Connect relay terminal 30 & 86 to

Fig. 5

positive (+) 24-volts such as battery,
alternator, fuse block or etc., using
16-gauge wire or heavier. IMPORTANT:
Protect the electrical circuit with the
fifteen (15)-amp inline fuse provided.

WARNING: The inline fuse must be

86

86

connected directly to the power source.

15. Connect the compressor’s negative
(-) terminal to boat’s battery, (-) post or
any clean metal negative surface. Use

15 AMP
FUSE

not less than 16-gauge wire.

RECAP OF RELAY TERMINAL

CONNECTIONS:

Relay terminals 30 & 86: the two terminals are connected to 24-Volts (+) positive, using the 15-amp inline fuse.
Relay terminal 85: is connected to horn switch.
The horn switch’s other terminal: is connected to negative (-) battery post.
Relay terminal 87: is connected to the compressor’s (+) motor terminal.
The compressor’s negative (-) terminal: is connected the boat’s negative (-) battery post.