6
LTG- Pr12V to siren backlighting. Connect to a vehicle circuit that is powered when the
ignition switch is " on ". If backlighting dimming is desired, connect to the dash lights' circuit.
Caution- If connected to the battery the backlighting will be active at all times.
PKILL- This feature automatically deactivates siren tones when the vehicle is shifted into PARK.
When the 3-Level switch is set to Level-3, Level-3 will " dropout " when the vehicle is shifted to PARK
if this feature is enabled via the rear panel dip switch. Siren tones will be disabled until the vehicle is
shifted out of PARK and the front panel selector switched is either returned to standby ( or another
function is selected ) or the lighting level control is returned to level 1. This circuit is activated by a
negative signal. Connect this input to a circuit that is GROUNDED (Earth) when the vehicle is shifted
into PARK. It is the installer's responsibility to determine an appropriate location in the vehicle
circuitry to connect this wire.
RRB - Connect to one side of the two-way radio speaker.
RRB - Connect to the second side of the two-way radio speaker.
InterClear
®
- Connect to the device or circuit that is to be activated by the InterClear feature. The
InterClear circuit is internally current limited at 1 Amp. Should your application require higher
currents, use the InterClear Power Booster Kit (# INTBS), available from your Code 3 supplier.
1/4" Male Quick-Connect Printed Circuit Board Terminals
+12V - Connect to a po12 volt DC source. It is recommended that the user protect this wire
with a 20 Amp fuse or circuit breaker located at the source. Use #14 gauge wire terminated with 1/4"
female, fully insulated quick-connect terminals only.
NEG - Connect to the negative terminal of the battery. This supplies ground (earth) to the siren. Use
#14 gauge wire terminated with 1/4" female, fully insulated quick-connect terminals only.
Power Distribution Connections
A #8 stud is provided on the rear of the unit and is intended for use ONLY as a convenient ground
(earth) " tie-point " for the light bar wiring. It is not an adequate ground (earth) for the siren or the
light bar. It is recommended all ground (earth) wires attached here be terminated with a crimp-
on ring terminal.
WARNING!
!
CONNECTION OF A 58 WATT SPEAKER TO THE SPKR TERMINAL WILL CAUSE THE
SPEAKER TO BURN OUT, AND WILL VOID THE SPEAKER WARRANTY!
The sound projecting opening should be pointed forward, parallel to the ground, and not
obstructed or muffled by structural components of the vehicle. Concealed or underhood
mountings in some cases will result in a dramatic reduction in performance. To minimize this
reduction, mount the speaker so the sound emitted is projected directly forward and obstruction by
vehicle components such as hoses, brackets, grille, etc. is minimized.
Electromechanical sirens and electronic siren speakers should be mounted as far from the
occupants as possible using acoustically insulated compartments and isolation mountings to
minimize the transmission of sound into the vehicle. It may be helpful to mount the device
on the front bumper, engine cowl or fender; heavily insulate the passenger compartment;
and operate the siren only with the windows closed.
Each of these approaches may cause significant operational problems, including loss of
siren performance from road slush, increased likelihood of damage to the siren in minor
collisions, and the inability to hear the sirens on other emergency vehicles.
APPROPRIATE TRAINING OF VEHICLE OPERATORS IS RECOMMENDED TO ALERT
THEM TO THESE PROBLEMS AND MINIMIZE THE EFFECT OF THESE PROBLEMS
DURING OPERATIONS.
