The 12 volt Ignition Switched Supply (brown tagged wire)
This wire stops the alarm from arming when the ignition is turned
ON.
It is important the wire remains positive when all the machines
controls are operated. Should the power fall away from this wire it is
possible the engine may cut out. For this reason we advise you
connect to an ignition switched positive supply which is run critical. In
this way if the power to this wire fails the machine would stop anyway
and therefore supply taken becomes as safe as the machine itself.
One exception to this is using a kill switched controlled ignition
supply. This is acceptable but it must be explained to the customer
that the immobiliser will arm if the kill switch is turned to off.
Many installers use other circuits (e.g. the rear brake light supply).
Whilst this will work it should be realised if the fuse blows to this
circuit due to a fault on the machine itself the machine would stop. As
the blown OE fuse is not related to the running of the machine in the
standard form, it may be difcult for the customer to identify why the
machine has stopped.
On some machines certain ignition switched positive circuits turn off
whilst the starter button is being operated to reduce the load on the
battery. This is particularly true of lighting circuits, therefore it is
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