Galls Street Thunder ST280 Installation And Operating Instructions Manual - Page 8
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(Electrical Connections CONT'D)
Optional Connections for Siren Functions:
BLUE:
(Pins 3 & 6) Input From Radio - Used for radio repeat. Connect one
blue lead to each terminal of the radio speaker or output
connector of the radio. Most radio outputs are isolated, in which
case polarity would not be important. Radios with polarity sensitive
outputs should be connected w/ the blue wire from pin 6 to the
positive radio output, and the blue wire from pin 3 to the negative
radio output. Use #18 AWG wire.
GREEN:
(Pin 10) AUX or Horn Ring - Used for remote Manual (or Air Horn)
control. Connect to the horn ring circuit or some other remote
switch. Circuit may be positive or negative with proper jumper
selection. See INSTALLER-SELECTABLE OPTION section (page 3 and
4) for jumper details.
NOTE: Cut lead short if not used & insulate w/ electrical tape.
GRAY:
(Pin 8) Park Kill (Cut-off) – This wire is used to de-activate the siren
when the vehicle is exited. Connect to dome light or added door
switch. Circuit may be positive or negative with proper jumper
selection. See INSTALLER-SELECTABLE OPTION section (page 2) for
jumper details.
NOTE: Be sure to cut lead short if not used and insulate with
electrical tape.
Testing -
Test all siren functions after installation to assure proper
operation. Test vehicle operation to assure no damage to vehicle.
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