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©1997 Whelen Engineering Company Inc.
Form No.13221D (022502)

For warranty information regarding this product, visit  

www.whelen.com/warranty

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

Whelen Engineering requires the use of waterproof butt splices and/or connectors if that connector could be exposed to moisture.

Any holes, either created or utilized by this product, should be made both air- and watertight using a sealant recommended by your vehicle 
manufacturer.

Failure to use specified installation parts and/or hardware will void the product warranty.

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 the 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 (this does not include products that use 
cigar power cords).

Do not attempt to activate or control this device in a hazardous driving situation.

Use only soap and water to clean the outer lens. Use of other chemicals could result in premature lens cracking (crazing) and discoloration. 
Lenses in this condition have significantly reduced effectiveness and should be replaced immediately. Inspect and operate this product 
regularly to confirm its proper operation and mounting condition. Do not use a pressure washer to clean this product.

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!

Automotive:

 Power Supplies

Warnings to Installers

Whelen’s emergency vehicle warning devices must be properly mounted and wired in order to be effective and safe. Read and follow all of Whelen’s written
instructions when installing or using this device. Emergency vehicles are often operated under high speed stressful conditions which must be accounted for
when installing all emergency warning devices. Controls should be placed within convenient reach of the operator so that they can operate the system without
taking their eyes off the roadway.   Emergency warning devices can require high electrical voltages and/or currents. Properly protect and use caution around
live  electrical  connections.Grounding  or  shorting  of  electrical  connections  can  cause  high  current  arcing,  which  can  cause  personal  injury  and/or  vehicle
damage,  including  fire.  Many  electronic  devices  used  in  emergency  vehicles  can  create  or  be  affected  by  electromagnetic  interference.  Therefore,  after
installation of any electronic device it is necessary to test all electronic equipment simultaneously to insure that they operate free of interference from other
components  within  the  vehicle.  Never  power  emergency  warning  equipment  from  the  same  circuit  or  share  the  same  grounding  circuit  with  radio
communication equipment. All devices should be mounted in accordance with the manufacturer’s instructions and securely fastened to vehicle elements of
sufficient strength to withstand the forces applied to the device. Driver and/or passenger air bags (SRS) will affect the way equipment should be mounted. This
device should be mounted by permanent installation and within the zones specified by the vehicle manufacturer, if any. Any device mounted in the deployment
area of an air bag will damage or reduce the effectiveness of the air bag and may damage or dislodge the device. Installer must be sure that this device, its
mounting hardware and electrical supply wiring does not interfere with the air bag or the SRS wiring or sensors. Mounting the unit inside the vehicle by a
method other than permanent installation is not recommended as unit may become dislodged during swerving; sudden braking or collision. Failure to follow
instructions can result in personal injury. Whelen assumes no liability for any loss resulting from the use of this warning device. PROPER INSTALLATION
COMBINED WITH OPERATOR TRAINING IN THE PROPER USE OF EMERGENCY WARNING DEVICES IS ESSENTIAL TO INSURE THE SAFETY OF
EMERGENCY PERSONNEL AND THE PUBLIC.

Warnings to Users

Whelen’s emergency vehicle warning devices are intended to alert other operators and pedestrians to the presence and operation of emergency vehicles and
personnel.   However, the use of this or any other Whelen emergency warning device does not guarantee that you will have the right-of-way or that other
drivers and pedestrians will properly heed an emergency warning signal. Never assume you have the right-of-way. It is your responsibility to proceed safely
before entering an intersection, driving against traffic, responding at a high rate of speed, or walking on or around traffic lanes. Emergency vehicle warning
devices should be tested on a daily basis to ensure that they operate properly. When in actual use, the operator must ensure that both visual and audible
warnings are not blocked by vehicle components (i.e.: open trunks or compartment doors), people, vehicles, or other obstructions. It is the user’s responsibility
to understand and obey all laws regarding emergency warning devices. The user should be familiar with all applicable laws and regulations prior to the use of
any  emergency  vehicle  warning  device.  Whelen’s  audible  warning  devices  are  designed  to  project  sound  in  a  forward  direction  away  from  the  vehicle
occupants.  However,  because  sustained  periodic  exposure  to  loud  sounds  can  cause  hearing  loss,  all  audible  warning  devices  should  be  installed  and
operated in accordance with the standards established by the National Fire Protection Association.

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.

      WARNING:

 This product can expose you to chemicals including Lead which is known to the State of California to cause cancer and birth defects or

other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Installation Guide:

ISP74 Intelligent Strobe Power Supply

51 Winthrop Road
Chester, Connecticut 06412-0684
Phone: (860) 526-9504
Internet: www.whelen.com
Sales e-mail: [email protected]
Customer Service e-mail: [email protected]

®

ENGINEERING COMPANY INC.

Summary of Contents for ISP74

Page 1: ...gnetic interference Therefore after installation of any electronic device it is necessary to test all electronic equipment simultaneously to insure that they operate free of interference from other components within the vehicle Never power emergency warning equipment from the same circuit or share the same grounding circuit with radio communication equipment All devices should be mounted in accord...

Page 2: ...res BLUE GREY use either the Whelen 25ft cable P N 46 9641638 250 or similar twisted pair wires Caution As it will be necessary to drill holes into the mounting surface 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 Section 2 Operating Instructions The ISP74 has been...

Page 3: ...h 2 OFF Dip Switch 2 OFF Dip Switch 3 ON Dip Switch 3 OFF Dip Switch 4 OFF Dip Switch 4 ON Control Wires In this configuration control wires 1 2 3 4 are not used to enable outlets or control Hi Lo power activation as with the previous modes Outlet control and Hi Lo power activation is handled by the S C Multi Purpose Controller Section 3 Hi Lo Power Hi Lo power activation and functionality can be ...

Page 4: ...n Serial Communication mode 4 3 2 1 K A COMET FLASH K A DOUBLE FLASH RAPID RANDOM K A MODU FLASH K A SEQUENTIAL KA MICRO BURST 2 KA MICRO BURST 3 Pattern Wire 1 BROWN Pattern Wire 2 WHITE Pattern Wire 3 GREY Pattern Wire 4 ORANGE K A TRIPLE FLASH PATTERN WIRE PATTERN TYPE If the LED is OFF ON continuously ON continuously with a single flash every few seconds Flashing rapidly Either the outlet in q...

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