Harbor Freight Tools 94862 Assembly And Operating Instructions Manual

12 VDC AIR HORNS

WITH COMPRESSOR

ASSEMBLY AND OPERATING INSTRUCTIONS

3491 Mission Oaks Blvd., Camarillo, CA 93011

Visit our Web site at http://www .harborfreight.com

Copyright © 2006 by Harbor Freight Tools®. All rights reser ved. No por tion of this
manual or any artwork contained herein may be reproduced in any shape or form
without the express written consent of Harbor F reight Tools.

For technical questions and replacement parts, please call 1-800-444-3353

94862

Due to continuing improvements, actual product may
differ slightly from the product described herein.

SKU 94862 For technical questions, please call 1-800-444-3353 Page 2

Specifications

Item Description

Power Requirement 12 VDC, 10 watts, 8 ohms
Horn Sizes Bell mouth: 3” and 2-7/8”; Length: 5-3/4”, 6-

3/8” and 8-1/2”
Horn Material Plastic, Red; Brass diaphragm
Sound 135 dB, high/l o w bla s t; Tones: high, med i u m,

low, and music
Air Source Compressor, electric (supplied)
Wire 14-16 AWG auto wire
Weight 2.95 lbs.

Save This Manual

You will need the manual for the saf ety w arnings and precautions, assembly
instructions, operating and maintenance procedures, parts list and diagram. K eep
your inv oice with this manual. Write the invoice number on the inside of the front
cover. Keep the manual and in v oice in a safe and dry place for future reference.

Safety Warnings and Precautions

WARNING: When using tool, basic safety precautions should always be fol­lowed to reduce the risk of personal injury and damage to equipment.

Read all instructions before using this tool!

1. Keep work area c lean. Cluttered areas invite injuries.

2. Observe work area conditions. Do not use machines or po w er tools in
damp or wet locations. Don’t expose to rain. Keep work area well lighted.
Do not use electrically powered tools in the presence of flammable gases or
liquids.

3. Keep children awa y. Children must never be allow ed in the work area. Do
not let them handle machines, tools, or e xtension cords.

4. Use the right product for the job. There are certain applications for which
this product was designed. It will do the job better and more safely at the rate
for which it was intended. Do not modify this product and do not use for a
purpose for which it was not intended.

5. Dress properly. Do not wear loose clothing or jew elry as they can be caught
in moving parts. Protectiv e , electrically non-conductive clothes and non-skid
footwear are recommended when w orking. W ear restrictive hair co v ering to
contain long hair.

6. Do not overreach. Keep proper footing and balance at all times. Do not
reach over or across running machines.

SKU 94862 For technical questions, please call 1-800-444-3353 Page 3

7. Check for dama ged parts. Bef ore using this product, any part that appears
damaged should be carefully checked to determine that it will operate
properly and perform its intended function. Check for any other condition that
may aff ect proper operation. Any part that is damaged should be properly
repaired or replaced by a qualified technician. Do not use the product if the
switch does not turn On and Off properly.

8. Replacement parts and accessories. When servicing, use only identical
replacement parts. Use of an y other parts will void the warranty. Only use
accessories intended for use with this product. Approved accessories are
availab le from Harbor F reight Tools.

9. Do not operate tool if under the influence of alcohol or drugs. Read
warning labels if taking prescription medicine to determine if your judgment or
reflex es are impaired while taking drugs. If there is any doubt, do not operate
this product.

Note: Performance of this tool may v ary depending on variations in battery power .

Product Specific Safety Precautions

Warning: The brass components of this product contain lead, a chemical known
to the State of California to cause birth defects (or other reproductive harm).
(California Health & Safety Code 25249.5 et seq.)

1. During installation, remove ignition k e ys from the v ehicle and set the parking
brake.

2. Only connect the positive (+) hot lead to a fused terminal or circuit.

3. A void short circuits or burns. Do not wear rings, watches , or other metallic
objects around your hands and arms.

Warning: The warnings, cautions, and instructions discussed in this instruction
manual cannot cover all possible conditions and situations that ma y occur. It
must be understood by the operator that common sense and caution are factors
which cannot be built into this product, b ut must be supplied b y the operator .

Unpacking

When unpacking, check to mak e sure the follo wing parts are included. Ref er to the
Parts List and Parts Photo at the end of this manual. If any parts are missing or
broken, please call Harbor F reight Tools at the number on the cover of this manual.

Warning: People with pacemakers should consult their ph ysician(s) before using
this product. Electromagnetic fields in close pro ximity to a heart pacemaker could
cause interference to or f ailure of the pacemaker .

SKU 94862 For technical questions, please call 1-800-444-3353 Page 4

Installation

Caution: If you are not familiar with working around vehicle engine
compartments, the installation should be completed by a qualified technician.
Before attempting installation of the Air Horns, remove the keys from the vehicle
ignition, set the emergency brake, and place wheel chocks.

1. Lift the vehicle hood and find a suitab le location to mount the Horns and
Compressor.

This location must shelter the Compressor (4) and Horns (1, 2, and 3) from
incoming rain, road water, and mud from under the vehicle. It also must be
awa y from all mo ving engine parts and heat.

2. Using a Bolt and Nut (9), mount the Compressor (4) to the vehicle chassis in
a vertical position (air outlets facing up). See illustr ation middle-right.

A hole may need to be drilled in the chassis frame to accomplish this.
Always be careful that no electrical wires or cables are in the drilling path.
The head of the Bolt slides into the Compressor mounting bracket. Securely
tighten Nut.

3. Mount the Horns near the Compressor so that they are pointing forw ard and
slightly downward f or maximum efficiency. The head of the Bolt slides into the
Horn mounting bracket. Securely tighten Nut. See illustration middle-left.

4. Mount the Electric Relay (6) to the chassis frame near the Compressor using
a Bolt and Nut. Securely tighten.

5. Connect the Compressor to the Horns using the rubber Tubing (5) and the
Y-Connector (8). Cut the rubber tubing to the desired length. Do not fold or
kink tubing. See illustration below .

Compressor
MountingHorn Mounting

SKU 94862 For technical questions, please call 1-800-444-3353 Page 5

6. Make the connections to the Compressor (4) and the Electric Relay (6) as
shown on the wiring diagram below.

Always use v ehicle terminal type connectors (not supplied) on all connections.
Nev er wrap wires around terminals as they could f all off. Connect terminal #30 on
the Electric Relay (6) to a 30A fused circuit.

Note: Some vehicles ma y employ a positiv e ground system. If this is the case, refer
to the wiring diagram above-left. P ay attention to polarity. If the Compressor turns on
and the Horns do not sound, reverse the Compressor connections (+ / -).

7. The Air Horns will now sound when the vehicle horn is pushed.

Maintenance

1. P eriodically add a fe w drops of light oil to each air outlet of the Compressor .
First remove air outlet tubes. Energize the Compressor. Excess oil will be
blown out. Wear ANSI approv ed safety glasses for this process.

2. Periodically check the Air Horn, Relay, and Compressor hardware for
tightness. Also check for secure wire connections .

Wiring Diagrams

Compressor (4)

Horns (1, 2, and 3)

Tubing (5)

Y-Connector (8)

SKU 94862 For technical questions, please call 1-800-444-3353 Page 6

Parts List

Item Description Qty

1 Horn, Large 1
2 Horn, Medium 1
3 Horn, Small 2
4 Compressor 1
5 Tubing 1
6 Relay 1
7Switch 1
8 Y-Connector, Tubing 1
9 Hardware, Nuts and Bolts 4

10 Separator, Mounting 3

Parts Photo

(1)

(2)

(3)

(4)

(5)

(7)

(8)

(6)

(10)

(9)

(9)

(9)

NOTE: Some parts are listed and shown for illustration purposes only and are not
available individually as replacement parts.

SKU 94862 For technical questions, please call 1-800-444-3353 Page 7

PLEASE READ THE FOLLOWING CAREFULLY

THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS DIAGRAM
IN THIS MANUAL AS A REFERENCE T OOL ONLY. NEITHER THE MANUF ACTURER NOR
DISTRIBUTOR MAKES ANY REPRESENTATION OR WARRANTY OF ANY KIND TO THE
BUYER THAT HE OR SHE IS QUALIFIED TO MAKE ANY REPAIRS TO THE PRODUCT OR
THAT HE OR SHE IS QUALIFIED TO REPLACE ANY PARTS OF THE PRODUCT. IN FACT,
THE MANUFACTURER AND/OR DISTRIBUTOR EXPRESSLY STATES THat ALL REPAIRS
AND PARTS REPLACEMENTS SHOULD BE UNDERTAKEN BY CERTIFIED AND
LICENSED TECHNICIANS AND NOT BY THE BUYER. THE BUYER ASSUMES ALL RISK
AND LIABILITY ARISING OUT OF HIS OR HER REPAIRS TO THE ORIGINAL PRODUCT
OR REPLACEMENT PARTS THERET O , OR ARISING OUT OF HIS OR HER INSTALLA TION
OF REPLACEMENT PARTS THERETO.