Installation guide

Installation Guide P. 17
Positive Systems:
Very similar to the negative system, except that the vehicle's clutch relay is trigger by 12 V, instead
of a negative signal. In a positive system, when the clutch is pressed; a positive (12 V) signal is
sent to the relay, the relay energizes, when the key is turned to the START position the 12 V from
the start wire is allowed to pass through the relay and to starter motor. One of the wires at the
clutch will test as 12 V, this is the supply wire. The relay's positive trigger wire will only show
positive when the pedal is pressed (some vehicle's also require the Ignition system to be powered).
To confirm you have positive system, hot wire the positive trigger wire by jumping it to a 12 V
source with your fused test jumper. You should now be able to turn the key to the START position
and engage the start motor, without pressing in the clutch pedal. A relay is needed to send 12 V to
the trigger wire from the system during start attempts.
Note on N/C systems:
There are different types of this system used by various vehicle manufactures, the following is
used to illustrate how these systems work in general.
Normally Closed (N/C) Systems:
In the previous two examples, the clutch was bypassed by engaging the clutch relay. In an N/C
system, a relay is also used to interrupt the starter wire. In order to bypass an N/C clutch, one must
prevent the clutch relay from engaging.
If the pedal is not pressed, when the ignition key is turned to the START position, the relay energizes
and interrupts the start wire. If the pedal is pressed, when the Ignition key is turned to the START
position, the relay does not energize and the start signal reaches the starter motor.
In an N/C system, the supply wire is connected to the trigger wire of the relay at rest (pedal not
pressed). When the pedal is pressed, the connection is broken between the supply wire and the
trigger wire of the relay (disengaging the relay). To verify that you have a N/C system disconnect
the clutch switch, and the vehicle should start without the clutch pedal being pressed. When you
test the trigger wire with your logic probe, the trigger wire will test as 12 V or negative when the
pedal is not pressed, it should read as an open circuit ( or float) when the pedal is pressed.
Note:
Your probe may also show feed back from the other end of the circuit. The polarity of the trigger
wire does not matter in this system: all you need to do in order to bypass it is to use a relay to
interrupt this wire during remote starts.
Ignition-controlled Door Locks
This feature will lock all the doors of the vehicle when the brake pedal is pressed while the ignition
key is in the IGNITION ON (RUN) position. The unit will unlock all doors when the ignition key is turned
back to the off position. If ignition lock only is selected, the system will only lock all doors when the
brake pedal is pressed while the ignition key is in the IGNITION ON (RUN) position. If option ignition
unlock only is selected, the system will unlock all doors when the key is turned to the OFF position
(provided that the ignition key was in the IGNITION ON (RUN) position and that the brake pedal was
pressed at least once).
Ignition Re-lock
This feature is automatically available whenever ignition lock is available. When ignition is on (but
not under remote start) and a door is opened and closed, the system will re-lock all doors next time
the brake pedal is pressed.