Whelen HWLRB4 User Manual

®

ENGINEERING COMPANY INC.

51 Winthrop Road
Chester, Connecticut 06412-0684
Phone: [phone]
Fax: [phone]

Howler™ Siren Speaker Bracket

Installation Guide:

2008 Ford E-Series

Model: HWLRB4

Internet: www.whelen.com
Sales e-mail: [e-mail]
Canadian Sales e-mail: [e-mail]
Customer Service e-mail: [e-mail]

DANGER! Sirens produce extremely loud emergency warning tones! Exposure to these

tones without proper and adequate hearing protection, could cause ear damage and/or hearing
loss! The Occupational Safety & Health Administration (www.osha.gov) provides information
necessary to determine safe exposure times in Occupational Noise Exposure Section 1910.95.
Until you have determined the safe exposure times for your specific application, operators and
anyone else in the immediate vicinity should be required to wear an approved hearing protection
device. FAILURE TO FOLLOW THIS RECOMMENDATION COULD CAUSE HEARING LOSS!

Safety First

This document provides all the necessary information to allow your Whelen product to be properly and safely installed.
Before beginning the installation and/or operation of your new product, the installation technician and operator must
read this manual completely. Important information is contained herein that could prevent serious injury or damage.

• Proper installation of this product requires the installer to have a good understanding of automotive electronics,
systems and procedures.

• If mounting this product requires drilling holes, the installer MUST be sure that no vehicle components or other
vital parts could be damaged by the drilling process. Check both sides of the mounting surface before drilling
begins. Also de-burr any holes and remove any metal shards or remnants. Install grommets into all wire
passage holes.

• If this manual states that this product may be mounted with suction cups, magnets, tape or Velcro®, clean the
mounting surface with a 50/50 mix of isopropyl alcohol and water and dry thoroughly.

• Do not install this product or route any wires in the deployment area of your air bag. Equipment mounted or
located in the air bag deployment area will damage or reduce the effectiveness of the air bag, or become a
projectile that could cause serious personal injury or death. Refer to your vehicle owner’s manual for the air bag
deployment area. The User/Installer assumes full responsibility to determine proper mounting location, based
on providing ultimate safety to all passengers inside the vehicle.

• For this product to operate at optimum efficiency, a good electrical connection to chassis ground must be
made. The recommended procedure requires the product ground wire to be connected directly to the NEGATIVE
(-) battery post.

• If this product uses a remote device to activate or control this product, make sure this control is located in an
area that allows both the vehicle and the control to be operated safely in any driving condition. DO NOT
ATTEMPT TO ACTIVATE OR CONTROL THIS DEVICE IN A HAZARDOUS DRIVING SITUATION.

• It is recommended that these instructions be stored in a safe place and
referred to when performing maintenance and/or reinstallation of this
product.

• FAILURE TO FOLLOW THESE SAFETY PRECAUTIONS AND
INSTRUCTIONS COULD RESULT IN DAMAGE TO THE PRODUCT OR
VEHICLE AND/OR SERIOUS INJURY TO YOU AND YOUR PASSENGERS!

ACTIVATION OF THIS
SIREN MAY DAMAGE
UNPROTECTED EARS!

CAUTION

Loud siren noise can cause
hearing damage and/or loss.

Wear

Refer to OSHA Section 1910.95 prior

Protection!

to putting ANY siren into service!

Automotive: Sirens/Switches

For warranty information regarding this product, visit www.whelen.com/warranty

©2008 Whelen Engineering Company Inc.
Form No.14212B (111510)

Page 1

Siren

Bracket slides
behind

fender

support.

Speaker

The Howler™ Supplemental Siren was designed for use in high-risk areas such as an

WARNINGS BEFORE CONTINUING!

intersection. It is not intended to be, nor should be operated as, a replacement or
alternative to the vehicle’s primary siren.

5/16 -18 X 1-1/4
Hex Head Bolt

MOUNTING
STRAP
(QTY 2)

The low-frequency tones of the Howler™ demonstrate significantly different audio
characteristics as compared to those of a traditional higher-frequency siren. While the
low-frequency tones are better able to penetrate other vehicles, thus alerting drivers to
the presence of the responding emergency vehicle, these tones may also penetrate into
the responding vehicle itself. This could potentially expose the operator to increased
noise levels.

SPEAKER
CLAMP

5/16 Flat
Washer

5/16 - 18
Elastic
Stop Nut

To help eliminate overexposure, the Howler™ siren has been designed with a built-in
timing circuit. The Occupational Safety & Health Administration (OSHA) (www.osha.gov)
provides information necessary to determine safe exposure times in Noise and Hearing
Conservation, Section 1910.95 (Occupational Noise Exposure). Until you have
determined the safe exposure times for your specific application, this siren should be
configured for the minimum operating time and operators should be required to use an
approved hearing protection device. FAILURE TO FOLLOW THIS RECOMMENDATION
COULD CAUSE HEARING LOSS!

5/16-18X1-1/4
Hex Head Bolt

5/16 Flat
Washer

SPEAKER
CLAMP

5/16 - 18
Elastic
Stop Nut

Fig. 1

Installation:

The passenger and driver side siren speaker brackets both mount in the
same manner.

1. Secure the mounting straps to the speaker by securing the speaker clamp
using the supplied hardware (Fig 1).

IMPORTANT! The slotted holes in the siren speaker must face down
(towards the road) when mounted so that water will not be trapped inside.

IMPORTANT! READ THESE

Fig. 3

5/16-18
Elastic Stop Nut

5/16-18
Elastic Stop Nut

5/16 Flat Washer

Front of
vehicle

Front Support
Bracket

Spacer

Secure with
existing
hardware

2. Secure the mounting bracket to the vehicle. The installation uses 2 existing
bolts and one supplied bolt (Fig. 2). Remove bolts “B” and “C” from the

5/16-18x13/4"
Hex Head Bolt

vehicle.

Bracket slides

Bracket slides

behind fender

behind fender

B

support.

support.

A

C

Fig. 2

3. Place the siren bracket into it’s mounting location and replace bolt “C” and

Use the

existing

bolt

5/16
Flat
Washer

Existing
Hardware

C

1/4-20 x 1"
Hex Head Cap Screw

Speaker Clamp

Mounting Strap

5/16-18x11/4"
Hex Head Bolt

Supplied

A

Hardware

5/16-18 x 1"
Hex Head Bolt

then bolt “B” and tighten securely.

4. Insert bolt “A” (supplied) and tighten all 3 bolts firmly.

5. Secure the speaker clamp (with speaker) to the mounting bracket and
tighten securely.

6. For the last step, you will add the spacer (between the top tabs of the
mounting straps) while installing the front support bracket. The front support
bracket secures to the front of the vehicle (just behind the headlight) using
existing hardware. The front support bracket will line up with the existing bolt
you will use.

Mounting Bracket

1/4 Flat Washer

(3/4" O.D.)

Elastic Stop Nut

1/4-20

5/16 Flat Washer

Elastic Stop Nut

B

Existing
Hardware

(3/4" O.D.)

5/16-18

7. Extend the BLACK (-) negative and WHITE (+) positive wires to your siren
amplifier and connect as described in the amplifiers instructions.

IMPORTANT! It is the responsibility of the installation technician to make sure that the installation and operation of this product will not
interfere with or compromise the operation or efficiency of any vehicle equipment!

IMPORTANT! Before returning the vehicle to active service, confirm the proper operation of this product, as well as all vehicle components/
equipment

Page 2