User Manual

6. Secure the front trumpet support bracket using the hardware provided. Tighten screws evenly to ensure a
watertight seal. IMPORTANT: Be sure to use the rubber gasket provided to protect against water leaks.
7. Follow the same procedure steps 1-6 to mount the second trumpet.
COMPRESSOR INSTALLATION: Fig. 3 & 4
8. 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.
9. 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.
10. Using the plastic tubing provided, cut to size and
connect the compressor to the horn’s air inlet tube as
shown in Fig. 4.
11. Follow the same procedure steps 7-10 to install
the other compressor that will connect to the second
trumpet.
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
12. Install the horn relay provided,
locate close to the compressor in a
dry interior location with the terminals
facing downward.
13. Connect relay terminal 87 to the
compressor’s positive (+) terminal.
Use 16-gauge wire or heavier.
14. Connect relay terminal 85 to the
horn button switch terminal. (Horn
switch not provided).
15. 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.
16. Connect relay terminal 30 & 86 to positive (+) 12-volts such as battery, alternator, fuse block or etc., using
16-gauge wire or heavier. IMPORTANT: Protect the electrical circuit with the twenty (20)-amp inline fuse
provided. WARNING: The inline fuse provided must be connected directly to the power source.
17. 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.
RECAP OF RELAY TERMINAL CONNECTIONS
Relay terminals 30 & 86: the two terminals are connected to 12-volts (+) positive, using the 20-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.
18. Follow the same procedure steps 12-17 to wire the relay that will power the compressor for the second trumpet.
IMPORTANT: Connect relay terminal 85 to the same horn switch wire that is connected to other relay.
Fig. 5
air
inlet
tube