Wolo 845 User Manual

INSTALLATION INSTRUCTIONS

for Road Warrior DD – Model 845

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. 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).

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 size
as shown in Fig. A.

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

IMPORTANT: Be sure to use the rubber gasket to protect against water leaks.

4. Position the front trumpet support bracket around the narrow part of the trumpet.

Push the bracket forward until it is tight. Use
the bracket as a template, mark hole loca­tions and drill to size. See Fig. B.

5. Secure the front trumpet support bracket
with the hardware provided.

IMPORTANT: Be sure to use the rubber
gasket to protect against water leaks.

6. 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.

7. Install the tank and the trumpets back onto the horn’s base. Only hand tightening is
required.

COMPRESSOR INSTALLATION

8. Install the compressor in a dry location. IMPOR-

TANT: Compressor must be mounted not further

than 8 to 10 inches from the trumpet for proper
sound.

9. To secure the compressor drill one 5/16” hole. When possible, mount the compressor (air
outlet on 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. C.

10. Using the plastic tubing provided, connect the compressor to the horn’s flexible inlet hose

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

WIRING

11. 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) ter-

minals, 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.

10. B. For one (1) wire systems: If vehicle’s factory horn has one (1) ter-

minal, simply transfer the wire to the compressor’s positive (+) ter­minal.

10. C. Use16-gauge wire or heavier, the compressor’s negative terminal

is connected to any metal body bolt. Aground connection should
be free of rust and paint.

Electrical Connections for a New Horn Button Switch

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

IMPORTANT: Use16-gauge wire or heavier.

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.

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
ATERM OF THREE (3) MONTHS. UNDER NO CIRCUMSTANCES SHALLWOLO 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]

© 2011 Wolo Mfg. Corp All Rights Reserved.