Brown Wire Negative Siren/Horn Output - Omega Research & Development Excalibur Gold ATV Series Comprehensive Installer Technical Manual

Negative Siren/Horn Output
The Brown wire is a 1 Amp Negative output to operate the system's audible functions. This output is programmable, and may used to sound an electronic
siren (program "steady", the factory setting) or the vehicle's existing horn (program "pulsed"). Instead of the siren, if the vehicle's horn is preferred, this
output must be changed from steady to pulsed, allowing the use of the horn for the alarm's audible responses. If the vehicle does not utilize an existing horn
relay, one must be added or the output's 1 Amp capacity may be exceeded, which will damage the control module. The electronic siren requires a continuous,
steady output. The siren features six different siren tones, which change every 5 seconds. When configured for use with a horn, this output pulses for 10
seconds, then pauses for 5 seconds, repeating this cycle for the duration of the activated alarm period. This prevents the horn from overheating, thereby
ensuring a maximum useful horn life to the vehicle owner. When this output is programmed for pulsed horn operation, an additional programmable feature
allows loud or soft confirmation honks. Late-production units having a "M3760-3" siren IC may have the tones programmed; see Page 19.
CONNECTION: If used with the electronic siren, the Brown wire may be connected directly to the siren's Black wire, and the siren's Red wire is
connected to the Siren Positive Terminal on the system's control module. If used to sound the horn, the Brown wire may be connected directly to the vehicle's
existing horn switch wire, which is typically found at the steering column. The correct wire will show Positive 12 Volts normally, and no voltage when the
horn is honked. Direct connection of the Brown wire is to an existing horn switch-to-relay wire only. Once the vehicle's horn wire is identified, probe the
wire with a standard test light connected to Negative chassis ground. If the horn honks when probed, a direct connection may be made. If not, use the
following diagram to configure an optional relay. CAUTION! This is one of the few uses left for a standard test light in a modern vehicle! Use a digital
multimeter (DMM) to identify the horn wire first. Probing an Airbag circuit with a standard test light can cause the Airbag to deploy! One alternative
is to disconnect the horns, then operate the horn switch. A clicking sound from the vehicle will confirm the presence of a horn relay. Another alternative is
to check a wiring schematic of the vehicle in question.
Siren
Siren
OR
Black
Wire
Typical Connections
MOUNTING THE SIREN: Find a location in the engine compartment away from the extreme heat of the engine and manifold. A suitable location will
offer a firm mounting surface, will also allow sound dispersion out of the engine compartment, and not be accessible to a thief. The siren must be pointed
downward to avoid moisture collecting inside it and to enhance sound dispersal. The Brown Siren/Horn output wire has a 1 Amp capacity, which, if
exceeded, can damage the security system control module. Certain situations, among them multiple optional sirens or a vehicle which lacks a horn relay, an
optional SPDT relay is required.
EG-1800 ATV SUPPLEMENT
Siren Red:
To (+) Terminal Siren (+) Supply -PCB Flag
OEM Horn
Wire
EG-1800
Control
Brown: (-) Horn Or
Module
Optional Siren Output
Siren (+) Supply Short Red Wire (Early Production)
Terminal (Late Production)
ATV
(+) or (-) as needed
to operate the horn /
sirens
Page 57
Configuring A Relay, When Required
30
(+) 12 Volts 86 87a 85
87
Brown Negative Siren/Horn Output Wire
Brown Wire
To vehicle's
horn wire.
Brown wire
from module