SC-1002/1012-10 Installation Instructions Page 5 of 12
CP4997A 3/27/07
OPTION SWITCHES
An internal 8-position DIP switch on the circuit board may be changed to select various options.
Accessing Option Switches - the DIP switch is located just behind the front panel of the ampli-
fier. Use a 7/64” allen wrench to remove the 4 corner screws and front panel.
SW-1 (AUX_P) Auxiliary Input Polarity - The auxiliary input is normally activated with positive.
Turn switch off for negative activation.
SW-2 (INST_ON) Instant ON - The Enable input is normally required to turn on the unit. Turning
this switch on allows the front panel switches to instantly turn on the unit.
(SC-1002 and SC-1012 only)
SW-3 (T-T) Two-Tone - Two-Tone replaces Phaser tone by turning this switch on.
SW-4 (H_I) Horn Inhibit - Horn tone is disabled by turning this switch on. Horn will be replaced
with Yelp.
Tone Disable - All siren tones may be disabled except Wail and Yelp by turning on “T-T” and
“H_I” switches.
SW-5 (HRC) Horn Ring Cycler 2 (HRC2) - While the siren is in standby, the auxiliary input can
cycle through Mechanical, Wail, Yelp, and Phaser tones by repeatedly activating the auxiliary
input. Turn this switch on for HRC2 feature. See OPERATION section for further details.
SW-6 (SM) Short Manual - The Manual siren tone will normally die out and stop when released.
Turn this switch on to have Manual stop immediately.
SW-7 (MECH2) Mechanical Tone 2 - Turn this switch on for a different mechanical tone sound.
SW-8 (FALL) Mechanical Fall - Turn this switch on for a quicker mechanical tone fall time.
ELECTRICAL CONNECTIONS
Electrical connections to the unit are made using terminal block plug(s) and screw terminals lo-
cated on the amplifier. Label(s) on the unit identifies each terminal function. Install the plug on
the unit before wiring. If the unit needs service the plug can be easily removed without unwiring.
The power supply of the unit must be capable of delivering peak currents up to 50 amps for ade-
quate short circuit protection and reliable operation. The preferred source is directly at the vehicle
battery. The amplifier is fused.
Attach leads by stripping 3/8”, inserting into plug and clamp by tightening screw. Make sure the
screw is tight and the wire can’t be pulled out.
Failure to adequately tighten the screw can result in improper operation or burning the
connector and wire.
Wire Size and Termination - The diagram shows the minimum wire size used for each connec-
tion, along with recommended lead color. If the wire is longer than 10 ft. use the next larger wire
size. Use only high quality crimp connectors for installation on the vehicle.
Unit Enable Input Connection - This is like a power switch for the unit. Connect to a positive
circuit controlled by the vehicle ignition switch, usually a terminal at the vehicle fuse panel. The
required current is low (15mA typ.). Permanent power connection is not recommended as this
keeps unit on unattended and may drain battery. The unit may also be configured without this
connection. See Instant ON under OPTION SWITCHES section.
Auxiliary Input Connection - A momentary input typically connected to the horn ring of the vehi-
cle. See Auxiliary Polarity under OPTION SWITCHES section for proper activation polarity.
Input current is 1 to 20 mA.
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