Wolo 135 User Manual

INSTALLATION INSTRUCTIONS

™

Model 135-24 SEA SAFE
24-Volt

Your purchase of a Wolo SEA SAFE™ 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 SEA SAFE 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

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. 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 screws evenly to ensure a watertight seal.

COMPRESSOR INSTALLATION: Fig. 2 & 3

4. 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.

5. 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. 2.

6. Using the plastic tubing provided, cut to size
and connect the compressor to the horn’s inlet as
shown in Fig. 3.

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,
always keep the plastic tubing as short as
possible.

WIRING:

ELECTRICAL CONNECTIONS FOR USING A NEW HORN BUTTON SWITCH Fig. 4

7. Install the horn relay provided, located close to the compressor, in a dry interior location with the terminals
facing downward.

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

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

10. 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.

11. Connect relay terminal 30 & 86 to
positive (+) 24-volts such as battery,

Fig. 4

alternator, fuse block or etc. Use
16-gauge wire or heavier. IMPORTANT:
Protect the electrical circuit with the
fifteen (15)-amp inline fuse provided.
WARNING: The inline fuse must be
connected directly to the power source.

86

12. Connect the compressor’s negative
(-) terminal to boat’s negative (-) battery
post or any clean metal negative surface.
Use not less than 16-gauge wire.

15 AMP
FUSE

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.