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TABLE OF CONTENTS
GENERAL DESCRIPTION 1
INSTALLATION NOTES 1
INSTALLER SELECTABLE OPTIONS 2-3
MOUNTING 4
ELECTRICAL CONNECTIONS 4-9
Wire Size and Termination 4
Mandatory Siren Electrical Connections 5
Optional Siren Electrical Connections 6
Siren Wiring Diagram 7
Lighting Electrical Connections 8
Button Label Insertion 8
Lighting Wiring Diagram 9
OPERATION 10-13
ON/OFF Switch 10
Lighting Slide Switch 10
Lighting Push Button Switches 11
Selector Switch (Rotary Knob) 11
Manual/Horn Rocker Switch 12
Volume Controls 13
Microphone 13
Auxiliary Input 13
Park Kill 13
Speaker Diagnostics 13
SERVICE 14-15
FUSES 14
TROUBLESHOOTING 15
SPECIFICATIONS 16
LIMITED WARRANTY 17
RETURNS 17
NOTICE
Due to continuous product improvements, we must reserve the right to change any specifications
and information contained in this manual at any time without notice. Galls and/or the
manufacturer make no warranty of any kind with regard to this manual, including, but not limited
to, the implied warranties of merchantability and fitness for a particular purpose. Galls and/or the
manufacturer shall not be liable for errors contained herein or for incidental or consequential
damages in connection with the furnishing, performance, or use of this manual.
INSTALLATION INFORMATION
MODEL:
ST280
SERIAL #:
PURCHASE DATE: INSTALLER:
DEALER: INSTALLATION DATE:
OPTION JUMPERS
Negative Auxiliary Switching Audible Beep disable
Negative Park Kill Switching 8 sec. gun lock S4
Two-Tone Enabled Auxiliary Override
Thunder Disabled Pursuit Disable
Model and serial number located on bottom of unit
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