Omega Freedom 400 Owner's Manual page 15

Wiring Connections
Black Wire - (- Ground Input): This wire's connection is required for operation.
The Black wire's function is to supply - Ground, which completes the circuitry and
allows the security system to operate.
CONNECTION: Using its ring terminal, connect the Black wire to the metal frame
of the vehicle, preferably using an existing machine-threaded fastener. Make sure
that the ring terminal attached to the Black wire has contact with bright, clean
metal. If necessary, scrape any paint, rust or grease away from the connection
point until the metal is bright and clean. If the control module has an insufficient
ground connection, the security system can find partial ground through the wires
that are connected to other circuits, but the alarm will not function correctly, giving
the impression of a defective control module. The system can partially operate,
so a bad ground wire connection would be suspected. In some cases the alarm
could arm and disarm properly -but not function correctly otherwise.
IMPORTANT: The Black wire attached to the control module and siren
assembly is the antenna wire. Do not connect this wire to anything or the
transmitter's range will be reduced or eliminated. Stretch the Black antenna
wire out and as high as possible for the best operating range.
Installation Insert Page 4