Wolo 808 User Manual

AIR HORN INSTALLATION

1. Locate the desired area you wish to mount the dual trumpet
air horn. For best results, the front of the horn should be
unobstructed so that the sound can carry straight ahead.

2. Use the horn’s rubber gasket as a template, mark hole
locations and drill to sizes as shown in Fig. A.

3. Secure the horn with hardware provided. Tighten evenly to
provide a good water tight seal. Fig. A.

4. Secure the flexible inlet hose into the base of the horn. Do
not remove the Teflon tape on threaded end of hose. The
tape is used to prevent air leaks.

COMPRESSOR INSTALLATION

5. Install the compressor in a dry location. IMPORTANT: Compressor must be mounted not further than 8 to 10 inches

from the trumpet for proper sound.

6. To secure the compressor drill one 5/16” hole. When possible, mount the compressor (air
outlet at top). Install the head of
the bolt into the slot on the side
of the compressor. Secure the
compressor to the vehicle using
the lock washer/nut provided as
shown in Fig. B.

7. Using the plastic tubing
provided, cut to length and
connect the compressor to the
horn’s flexible inlet hose as
shown in Fig. C.

Caution: Avoid making any
kinks or sharp bends in plastic
tubing that will reduce air flow
and alter the horn’s sound.

WIRING

8. Electrical Connection – Using Vehicle Factory Wiring
IMPORTANT: You are not required to use the relay supplied with the kit because the vehicle factory system already

has a relay.
A. For two (2) wire systems: If vehicle’s factory horn has two (2) terminals, simply transfer wires to the compressor’s

terminals. IMPORTANT: when testing the horn if compressor turns on but the horn does not sound, reverse the
wires connected to the compressor.

B. For one (1) wire systems: If vehicle’s factory horn has one (1) terminal, simply transfer the wire to the compressor’s

positive (+) terminal.

C. Using wire provided or heavier 16-gauge, the compressor’s negative terminal is connected to any metal body bolt. A

ground connection should be free of rust and paint.

INSTALLATION INSTRUCTIONS

for Model 808

The addition of a Wolo horn for your vehicle will provide an extra level of sound. The Wolo name, with more than twenty
years of experience is your guarantee of a superior horn product. Each horn and compressor is bench tested before it is
packaged. Precision workmanship and quality components will assure years of reliable service. If you require assistance
installing your new Wolo horn, our technicians are available to answer your questions, Monday through Friday from 8 AM to
4 PM EST 1-888-550-HORN (4676).

Fig. A

Fig. B

Fig. C

9. Electrical Connection For A New Horn Button Switch (Included) (See Fig. D)
A. The relay that is supplied in kit must be used to power compressor. Find a location near the compressor that is dry.

IMPORTANT: Using wire provided or heavier 16-gauge.
B. Connect to horn switch terminal (-) ground. (Place a wire under any metal body bolt that is clean of paint and rust.)
C. Connect the other horn switch terminal to relay terminal #85.
D. Relay terminal #30 is connected to (+) 12 volts, battery, alternator, etc. The 20 amp inline fuse provided must be

used to protect your vehicle.

E. Relay terminal #86 is connected to relay terminal #30.
F. Relay terminal #87 is connected to the (+) terminal on the bottom of the compressor.
G. Ground is connected to the other compressor terminal marked (-). Place a wire under any metal body bolt that is

clean of paint and rust.

H. Recap of Terminal Connections for New Horn Switch:

Terminals: 30/86 - the two terminals are connected to 12 volts positive (+) using a fuse.

Terminal: 85 - connect to horn switch negative (-).

Terminal: 87 - connect to positive (+) terminal of compressor.

Fig. D

WARRANTY

Wolo Manufacturing Corporation (“Wolo”) warranties to the original purchaser, for three months from the date of
purchase, that this product is free from defects in workmanship and materials. If there is such a proven defect,
Wolo, at its option, will either repair or replace the item free of charge, if it is returned to Wolo within three months
from the date of purchase together with proof of purchase as described below. Wolo reserves the right to inspect
any defect prior to settling any warranty claim by repair or replacement. This warranty is limited as above provided
and Wolo will not be responsible for fire or other casualty or accident, due to neglect, abuse, abnormal use,
modifications, faulty installation of this product, or natural causes.

ANY EXPRESSED WARRANTY NOT PROVIDED HEREIN IS EXCLUDED AND DISCLAIMED. THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND OF FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY
LIMITED TO A TERM OF THREE (3) MONTHS. UNDER NO CIRCUMSTANCES SHALL WOLO BE LIABLE TO
PURCHASER OR ANY OTHER PERSON FOR ANY SPECIAL OR CONSEQUENTIAL DAMAGES, WHETHER ARISING
OUT OF BREACH OF WARRANTY OR OTHERWISE.

To obtain warranty service, return the product prepaid, and include the original bill of sale showing the date of purchase.
Provide with the return a brief description of the problem. Also, include with the return a check or money order in the
amount of $10.00 to cover return shipping. Mail to:

Wolo Manufacturing Corp. • One Saxwood Street, Deer Park, NY 11729

Attn: Warranty Service

E-mail: [e-mail]

Model 808

© 2005 Wolo Mfg. Corp All Rights Reserved.

Electrical Connections for a New Horn Button Switch