Code 3 21TR & 21TR Plus - Manual (Page 2)

2
Introduction
The 21TR™ & 21TR Plus TM Light Bar is a light bar that is approximately 2" high, yet delivers unobstructed 360° warning and more signal
power and versatility than any other light bar of its size through the use of newly designed Torus Technology TM optics. The low profile
and aerodynamic lines reduce air drag, which results in fuel savings and stability at high speeds. This light bar has a strong extruded
internal frame, shock-resistant polycarbonate lenses, and warning signals that exceed SAE standards. The light bar is designed on a
modular basis, which means that the light bar can be customized to meet any requirement. It has room for numerous halogen and
LED options, and offers the ultimate flexibility in the location of warning and auxiliary lights.
Wiring Instructions (read Care-
fully Before Installation)
wARNING!
The use of this or any warning device does not ensure that all drivers can or will observe or react to an
emergency warning signal. Never take the right-of-way for granted. It is your responsibility to be sure you can
proceed safely before entering an intersection, driving against traffic, responding at a high rate of speed, or
walking on or around traffic lanes.
The effectiveness of this warning device is highly dependent upon correct mounting and wiring. Read and
follow the manufacturer’s instructions before installing or using this device. The vehicle operator should insure
daily that all features of the device operate correctly. In use, the vehicle operator should insure the projection
of the warning signal is not blocked by vehicle components (i.e.: open trunks or compartment doors), people,
vehicles, or other obstructions.
This equipment is intended for use by authorized personnel only. It is the user’s responsibility to understand
and obey all laws regarding emergency warning devices. The user should check all applicable city, state and
federal laws and regulations.
Code 3, Inc., assumes no liability for any loss resulting from the use of this warning device.
Proper installation is vital to the performance of this warning device and the safe operation of the emergency
vehicle. It is important to recognize that the operator of the emergency vehicle is under psychological and
physiological stress caused by the emergency situation. The warning device should be installed in such a
manner as to: A) Not reduce the output performance of the system, B) Place the controls within convenient
reach of the operator so that he can operate the system without losing eye contact with the roadway.
Emergency warning devices often 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 cur-
rent arcing, which can cause personal injury and/or severe vehicle damage, including fire.
PROPER INSTALLATION COMBINED WITH OPERATOR TRAINING IN THE PROPER USE OF EMERGEN-
CY WARNING DEVICES IS ESSENTIAL TO INSURE THE SAFETY OF EMERGENCY PERSONNEL AND
THE PUBLIC.
!
Unpacking & Pre-installation
Carefully remove the light bar and place it on a flat surface, taking care not to scratch the lenses or damage the cable coming out of the
bottom. Examine the unit for transit damage, broken lamps, etc. Report any damage to the carrier and keep the shipping carton.
Standard light bars are built to operate on 12 volt D.C. negative ground (earth) vehicles. If you have an electrical system other than 12
volt D.C. negative ground (earth), and have not ordered a specially wired light bar, contact the factory for instructions.
Test the unit before installation. To test, touch the black wire to the ground (earth) and the other wires to +12 volts D.C., in accordance
with the instructions attached to the cable (an automotive battery is preferable for this test). A battery charger may be used, but please
note that some electronic options (flashers, etc.) may not operate normally when powered by a battery charger. If problems occur at
this point, contact the factory.