EXPMOD-2 Pathfinder
®
Expansion Module
Federal Signal
www.fedsig.com
Safety Messages for Installers and Operators
6
approved cover over the unit to prevent metal shavings from entering the unit.
Inspect the unit after mounting to be sure there are no shavings present in or
near the unit.
• Do NOT connect this system to the vehicle battery until ALL other electrical
connections are made, mounting of all components is complete, and you have
verified that no shorts exist. If wiring is shorted to vehicle frame, high current
conductors can cause hazardous sparks, resulting in electrical fires or flying
molten metal.
• Ensure that the siren amplifier/relay module and speaker(s) in your installation
have compatible wattage ratings.
• In order for the electronic siren to function properly, the ground connection
must be made to the NEGATIVE battery terminal.
• Sound output will be severely reduced if any objects are in front of the speaker.
If maximum sound output is required for your application, you should ensure
that the front of the speaker is clear of any obstructions.
• Install the speaker(s) as far forward on the vehicle as possible, in a location that
provides maximum signaling effectiveness and minimizes the sound reaching
the vehicle’s occupants. Refer to the National Institute of Justice guide 500-00
for further information.
• Mounting the speakers behind the grille will reduce the sound output and
warning effectiveness of the siren system. Before mounting speakers behind
the grille, make sure the vehicle operators are trained and understand that this
type of installation is less effective for warning others.
• Sound propagation and warning effectiveness will be severely reduced if the
speaker is not facing forward. Carefully follow the installation instructions and
always install the speaker with the projector facing forward.
• Do NOT install the speaker(s) or route the speaker wires where they may
interfere with the operation of airbag sensors.
• Installation of two speakers requires wiring speakers in phase.
• Never attempt to install aftermarket equipment, which connects to the vehicle
wiring, without reviewing a vehicle wiring diagram available from the vehicle
manufacturer. Ensure that your installation will not affect vehicle operation and
safety functions or circuits. Always check vehicle for proper operation after
installation.
• Do NOT install equipment or route wiring or cord in the deployment path of an
airbag.
• If a vehicle seat is temporarily removed, verify with the vehicle manufacturer if
the seat needs to be recalibrated for proper airbag deployment.
• Locate the control head so the vehicle, controls, and microphone can be
operated safely.
