Read all instructions and warnings before installing and using.
INSTALLER: This manual must be delivered to the end user of this equipment.
Introduction
The Switch Box switch control panel is designed to accommodate six rocker type switches, which are used to
control various vehicle mounted devices. Six legend inserts are installed above the switches as shown in figure
1 and 2. Six additional legend inserts are included as part of the accessory kit packed with the switch module.
A thermal lock out type circuit breaker, rated at 40 amps, protects the rotating light circuit (#1). The circuit of
one load current is rated at 40 amps. The other circuits (2 through 6) are protected by automotive blade type
fuses rated at 20 amperes.
The switch module is designed to be installed in a vehicle mounting surface to mate with other devices of the
same width.
It can be installed on top of TSD style panels, trunion mount, and many other types of the same width. It may
be used with various models of electronic sirens with the hardware included in the accessory kit, and secured to
the mounting surface with the bracket included with the electronic siren.
Sizes, ratings and switches: the switches are a rugged unit and rated at 20 amperes @ 12 VDC. The panel's
dimensions are 2 3/16" x 6 1/16" x 5 7/8" (including fuses). Overall weight of the unit is 2 pounds.
FIGURE 1
!
WARNING!
The use of this or any warning device does not insure 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.
Public Safety Equipment, 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 current arcing, which can cause personal injury and/
or severe vehicle damage, including fire. Incandescent lamps are extremely hot, allow to
cool completely before attempting to remove.
Any electronic device may create or be affected by electromagnetic interference. After
installation of any electronic device operate all equipment simultaneously to insure that
operation is free of interference. Never power emergency warning equipment from the
same circuit or share the same grounding circuit with radio communication equipment.
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.
2
Safety First
Installers should keep in mind the importance of safe installation to protect the lives of those who may depend
upon this equipment. Please read all instructions supplied with this equipment. Listed below are some other
important safety instructions to follow:
To properly install the equipment described in this instruction sheet: you must have a good
understanding of automotive electrical procedures and systems, along with proficiency in the
installation and use of safety warning equipment.
Locate the switch module so the vehicle and controls can be operated safely under all driving
conditions.
When drilling into a vehicle structure, be sure that both sides of the surface are clear of anything
that could be damaged.
Keep these instructions in a safe place and refer to them when maintaining and/or reinstalling the
product.
Failure to follow all safety precautions and instructions may result in property damage, serious injury, or death
to you or others.
Unpacking & Pre-installation
Carefully remove the Switch Control from the shipping carton and place on a flat surface, taking care not to
damage the wire cable coming out of the back of control box. Examine the unit for transit damage, dented
cover, ect.. If convenient, you may wish to bench test the unit before installing. Before applying voltage to the
bar, be sure you have read and understand the wiring instructions on page 5.
FIGURE 2
3
Installation
All devices should be mounted in accordance with the manufacturer's instructions and
securely fasten to vehicle elements of sufficient strength to withstand the forces applied to
!
WARNING!
WARNING!
To install the Switch Box follow the installation instructions. There are several ways you may install this unit,
but if it is installed with the TSD trunion mounting bracket, you will need to follow the instructions provided for
the "CO" series brackets.
If you choose to mount this unit by a bail bracket (not provided), then follow the instructions that come with our
bail brackets.
The Switch Box may be mounted on top of or below a siren system. If this is your choice, then follow
the instructions below:
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. Front or rear grille/bumper placement must avoid interference with SRS
sensors. Mounting the unit inside the vehicle by a method other than the 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.
1) Select a mounting location which allows the vehicle and all controls to be
operated safely under all driving conditions.
2) Choose an adequately ventilated area. Never install near heat ducts or totally
enclosed areas.
3) Arrange the bottom of the switch control unit so that it is even with the siren face
module. Fasten the two units together with trunion mounts or brackets (not provided)
from both sides. You may need to remove the switch control for the housing. If this is
the case, it will require the removal of four phillips head screws located on top of the
switch control housing.
4) Secure the case with 1/4" - 20 x 5/8" hex head screws and 1/4" split lockwasher
(provided in kit). Do not tighten securely until a proper angle is positioned for safe
operator visibility.
5) Tilt the unit to the desired position and tighten the 1/4" - 20 x 3/8" hex head
screws.
6) Use the mounting bracket as a templet and position for two hole by marking the
position with a scribe. Drill holes for positioning the mounting bracket.
CAUTION: When drilling holes in any part of the vehicle, make sure that both sides
of the surface are clear of parts that could be damaged; such as brake lines,
electrical wiring, fuel lines, or other vital parts of the vehicle.
7) Drill two 1/4" diameter holes at the position marked.
8) Secure the mounting bracket in place. Make sure all positions are tight and
screws secured in place.
NOTE: Many other locations may be of better choice for your operation. If other
locations are selected, use every precautionary measure to safely install to prevent
damage to the vehicle.
Larger wires and tight connections will provide longer service life for components. For high
current wires it is highly recommended that terminal blocks or soldered connections be used
with shrink tubing to protect the connections. Do not use insulation displacement
connectors (e.g. 3M® Scotchlock type connectors). Route wiring using grommets and
sealant when passing through compartment walls. Minimize the number of splices to
reduce voltage drop. High ambient temperatures (e.g. underhood) will significantly reduce
the current carrying capacity of wires, fuses, and circuit breakers. Use "SXL" type wire in
engine compartment. All wiring should conform to the minimum wire size and other
recommendations of the manufacturer and be protected from moving parts and hot
surfaces. Looms, grommets, cable ties, and similar installation hardware should be used to
anchor and protect all wiring.
Fuses or circuit breakers should be located as close to the power takeoff points as possible
and properly sized to protect the wiring and devices.
Particular attention should be paid to the location and method of making electrical
connections and splices to protect these points from corrosion and loss of conductivity.
Ground terminations should only be made to substantial chassis components, preferably
directly to the vehicle battery.
The user should install a fuse sized to approximately 125% of the maximum Amp capacity
in the supply line to protect against short circuits. For example, a 30 Amp fuse should
carry a maximum of 24 Amps. DO NOT USE 1/4" DIAMETER GLASS FUSES AS THEY
ARE NOT SUITABLE FOR CONTINUOUS DUTY IN SIZES ABOVE 15 AMPS. Circuit
breakers are very sensitive to high temperatures and will "false trip" when mounted in hot
environments or operated close to their capacity.
Figure 2 illustrates the correlation of tagged wires to a corresponding operation. Example: Switch one (starting
from left to right) controls the electronic operation of the wire tagged as #1.
Insulated male terminals, which mate with the female terminals on the switch module wiring harness, have
been included in the accessory kit to facilitate installation. These terminals should be installed on the end of
the lead wire which will mate with the wiring harness lead wire. Use yellow terminals for 10-12 AWG wire and
pink terminals for 18-22 AWG wire.
NOTE: When using the insulated terminals, insure that all crimps are secure and that the male/female
terminals slip into each other and not over each other.
5
To properly wire the switch module, see the wiring diagram shown in figure 3 and perform the following
procedures:
1) Use 12 AWG wire and connect leads "1" through "6" to the applicable accessory
load. Remember: lead "1" corresponds to switch "1", lead "2" to switch "2", and so
on.
2) Use 18 AWG wire and connect the ground (earth) lead "G" to a reliable ground
(earth). Each switched device must be grounded with a separate ground (earth) wire.
3) Use 18 AWG wire and connect the backlighting circuit lead "B" to the accessory
terminal of the ignition switch or the vehicle instrument light circuit.
4) Power for the switch module may be obtained from a vehicle power distribution
center (TSD part number D1X1F-PD90) or by a 60, 80, or 100 amp master circuit
breaker (call TSD for part number required). We recommend that all circuits be
protected by fuses or circuit breakers. Installation of a power distribution center or
master circuit breaker should be placed near the battery. Use 8 AWG wire and
connect the power distribution center. If power is obtained in the engine
compartment, a hole will probably have to be drilled into the vehicle firewall. Place a
grommet or similar device in the hole to protect the wire (S) against damage from
rough edges.
CAUTION: When drilling holes in any part of any of the vehicle, ensure that both sides of the surface are clear
of parts that could be damaged: such as brake lines, electrical wiring, fuel lines, or any other vital part of the
vehicle.