Galls Street Thunder ST280 Installation And Operating Instructions Manual - Page 5
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Installer Selectable Options (continued)
Park Kill Input Polarity - The park kill (cutout) input turns off any siren tone
output when activated (i.e. vehicle shifted into park, door opened, etc.), and
remains off until a control on the siren is activated or changed. The wiring
diagram on page 8 shows two connection examples.
The park kill input is normally activated by connecting the gray wire to positive
voltage. To activate by connecting it to ground (negative) instead, move the jumper
from the "PK-POS" pins to the "PK-NEG" pins.
Auxiliary Input Function - The auxiliary input (green wire) allows activation by an
external source of either the Horn or the Manual push-button functions. This input is
usually wired into the vehicle horn switch. The wiring diagram on page 8 shows two
connection examples. NOTE: Permanent disconnection of the vehicle horn is NOT
recommended.
The siren is factory shipped with the auxiliary input option defaulted as the Horn
function (on only one of the "AUX" pins). To utilize the auxiliary input as the
Manual function instead of the Horn function, move the "AUX" jumper from one pin
onto both of the pins.
Two-Tone – The Thunder sound can be replaced by a Two-Tone sound by moving
the "TT" jumper from one pin onto both of the "TT" pins.
Thunder Disable - The Thunder function can be completely disabled by moving the
"TD" jumper from one pin to both pins. This will also disable the Two-Tone
function used when the manual button is pressed while the mode switch is in the
Thunder position.
Pursuit Disable - The farthest right slide switch position (L3) will normally
activate the siren output in the wail mode, along with all three light functions.
Automatic activation of the siren. If you prefer to NOT have the siren
automatically activated when the slide switch is moved to position three, move
Pursuit Disable jumper onto only one pin.
8 second timed gun lock
release (S4) - The amplifier
is shipped with the fourth
push button (S4) as a
standard on/off button. It
can be optionally selected to
stay activated for only 8
seconds when pressed. To
change button (S4) to a
timed unlock remove the
Gun Lock jumper and place
it only on one pin.
Speaker Disable (Audible beep disable) - The audible beep heard when the light
control buttons on the siren are pressed can be disabled. If you move the Speaker
Disable jumper from both pins onto only one pin, the audible beep will cease.
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