This wire needs to be connected to an ignition switched supply that
stays live even when the starter is cranking the engine otherwise the
immobiliser circuit when connected may not function correctly.
The Engine Cut (white and white/red or white and white/green
wires)
There are two main methods of immobilising a machine, the rst and
most common is by cutting a wire which is essential to the running of
the machine (DC cut method), the second is by earthing out a signal
wire so the ignition system cannot create the spark needed for the
engine to run (AC ‘earth out’ method). Whichever method is used the
immobilisation point should be made as inaccessible as possible. One
immobiliser wire on the alarm harness will always be unused
depending on the method of immobilisation and this wire should be
removed completely.
DC Cut Method
– For DC cut use white wire and white/green wire
Identify a wire which is critical to the engine operating but which is
carrying less than 7 amps and cut it. With modern machines it is
normally wise to use either the dedicated immobilisation points
provided by the manufacturer or to use an engine safety interlock (e.g.
side stand switch, kill switch, fall over sensor, etc.). Other circuits, such
as the fuel pump relay, ignition pack or coils may be used but refer to
the manufacturers service manual before using these circuits as they
may cause the machine to log error codes.
Where possible remove a section of the original cable and re-join this
wire via the white and white/green wire. These wires are non-
directional so it doesn’t matter which wire of the alarm is connected
to which end of the cut wire.
To Next Page
Loading...