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Wiring
HC4: White 10-Pin Main Harness
The main wire harness contains 9 wires which all have a specific purpose. Follow the wiring recommendations
enclosed for each wire. Wires not used should be released from the harness connector or taped off to prevent
accidental shorting.
Vacant Socket: Provides +12VDC Relay Coil Power
For use with ALA-RPT relay pack only. See Optional Accessory Connection for proper wiring.
Light Brown Wire: (-) Horn Output
The Light Brown wire is a pulsed ground output designed to activate the vehicle's existing car horn system in
place of or in addition to a siren sounding device. Connect the Light Brown wire to the negative trigger wire on
the vehicle's horn relay.
WARNING! Maximum output of this wire is 300mA. Horn systems requiring positive voltage or more than
300mA to trigger the horn relay will require an additional relay to increase current capabilities.
Light Brown Wire
Violet/Black Wire: (-) 200mA Programmable Channel 4 Output
(See Alarm Feature Programming Group 3) (Factory default setting is pulse ground) This wire is programmable
to provide a pulsed output or a programmed timer output. You may program the output to send ground signal
for 15 seconds, 30 seconds or have output for as long as you are pressing the control button on the
transmitter. This output can also be programmed for a latched output that is turned off by the ignition key.
Follow the programming procedures to adjust the output type to fit your requirement.
Brown Wire: (-) Siren Output
Connect the brown wire to the positive wire from a siren. Ground the remaining wire from the siren for proper
operation.
Blue Wire: (-) Hood / Trunk / Auxiliary Trigger Input
The blue wire is an instant grounding trigger input for optional hood/trunk grounded pin switches or any
electronic sensor.
Green Wire: (-) Common Door Pin Input
The green wire connects to the common wire of the vehicle that switches on the dome light. Normally this wire is
located at one of the door jamb switches. For some vehicles it may be necessary to connect the green wire directly
to the switched turn on wire at the dome light. The green wire connects to negative switched circuits only.
4
87
87a
86
85
30
To Horn
Fuse
To +12V
+12V or Ground Depending
on System Requirements
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