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Relays / Starter Interrupts
Normally Closed Starter Kill Relay |
The basic starter kill relay diagram shown below, breaks continuity
of the wire from the ignition switch to the starter motor (or in some
cases i.e.; Ford, to another relay), when the alarm is armed and the ignition
is turned on. This is the most commonly used application for disabling
the starter. Click here for another starter kill diagram.
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Normally Open Starter Kill |
This normally open starter kill relay application below relies
on a ground from the alarm when disarmed and 12 volts (+) from the ignition
to enable the driver to start the vehicle. * Note: most alarms with this
feature will not provide this grounded output when power ,12 volts (+),
to the alarm is not present, even if the alarm is grounded.
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Passive Starter Kill |
This is a stand alone starter kill. It does not rely on an
alarm or keyless entry for it to work, only a simple momentary contact
switch (normally open) to deactivate it. Every time the ignition is turned
off, continuity is broken on the starter feed wire. To disable (or start),
turn ignition on, then press the hidden switch, then start as normal.
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You can substitute the switch with a number of others devices such as the
amp turn on wire of your head unit. Be sure to isolate it with at least a 1 amp diode.
Turn the key to the run position. Allow the head unit to come on or turn it on.
Now start the vehicle. If you connected to the power antenna wire, make sure the tuner is on.
If you have a pullout or detachable face head unit, your vehicle will not start without it.
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If you wish to use a device such as your horn, but do not want the horn to sound
when you deactivate the starter kill, yet still work when driving,
you can use the same configuration above on both the horn and the starter wire as shown below. The starter kill is deactivated by
the positive output of the vehicle's horn relay and the horn's interrupt is deactivated by the
positive output of the starter wire from the key. You could substitute the horn with other devices such as parking lights, brake lights, etc.
where you do not want it to be obvious that you used the device to disable the starter kill.
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