WIRING:
USING BOATS FACTORY HORN SYSTEM (TWO WIRE SYSTEM) Fig. 6
WARNING: You are required to use the relay supplied with this horn kit to protect the factory horn button
switch and wiring. The original factory horn draws less amperage. The relay will ensure that the horn always
works reliably and will protect the factory horn system.
16. Remove the two (2) wires connected to factory horn.
17. Connect relay terminal 85 to one of the factory horn wires. Note: It does not make a difference which
factory horn wire is connected to
terminal 85.
18. Connect relay terminal 86 to
the other factory horn wire.
19. Connect relay terminal 30 to
positive (+) 12-volts such as the
battery, alternator or fuse block,
using 16-gauge or heavier
wire.
WARNING: The 20-amp
inline fuse must be used and
connected directly to the power
source.
20. Connect relay terminal 87
to the compressor’s positive
(+) terminal. Use not less than
16-gauge wire.
21. 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: connected to 12-volts (+) positive, using the 20-amp inline fuse.
Relay terminal 85: is connected to one of the factory horn wires.
Relay terminal 86: is connected to the other factory horn wire.
Relay terminal 87: is connected to the compressor’s (+) motor terminal.
The compressor’s negative (-) terminal: is connected the boat’s negative (-) battery post.
Fig. 6
86
