VXH6803C
INSTALLATION GUIDE
PAGE 2 of 2
COMPRESSOR MOUNTING
The ideal location for the compressor to be installed is a dry area inside your engine compartment where it
will be safe from exhaust and engine manifold heat.
To make the compressor firm and secure, drill a hole of 3/16".
IMPORTANT
: The compressor must be
mounted vertically (with air exhaust ports on top).
Install the bolt’s head into the compressor housing’s slot. Tighten the compressor firmly to the vehicle with the
provided mounting hardware.
AIR LINE INSTALLATION
With the plastic air tubing delivered with this kit, cut out the specific length for every trumpet. A colored ring is
found on the inlet fitting of every trumpet. When getting the plastic tubing connected, match the colors to
those of the outlet fitting of the compressor.
CAUTION
: Do not make any sharp bends or kinks in the tubing
which could alter the sound of the horn or even restrict airflow.
ELECTRICAL CONNECTIONS (FACTORY HORN SWITCH)
For vehicles with a two-terminal factory horn, transfer the
wires to the compressor’s terminals. If the horn
doesn’t sound even if the compressor motor turns on, simply reverse the wires.
For vehicles with one-
terminal factory horns, make sure you transfer the wire to the compressor’s positive (+)
terminal. The negative (-) terminal uses a 16-gauge wire or heavier to connect to ground.
ELECTRICAL CONNECTIONS (NEW HORN BUTTON)
In a dry location, install the relay provided making sure that terminals face downwards near the horn.
Using a 16-gauge wire or heavier, connect PIN 87 of the relay to the positive (+) terminal of the compressor.
Connect PIN 85 of the relay to the horn button (not provided). The other horn button terminal is attached to
any rust and paint free metal to ground. Connect using an 18-gauge wire or heavier.
Connect PIN 30 and 86 of the relay to the battery, alternator or other positive (+) of 12-volts. Make sure the
wire used is a 16-gauge wire or heavier. Use a 20A fuse (not provided) to protect the electrical circuit.
