3 Wire Positive Switched 2 Step Door Locks - Audiovox Car Security System AX-900 Installation Manual

3 Wire Positive Switched 2 Step Door Locks

The Blue wire provides a positive pulse during arming or the pulsed + 12 volt lock output. Connect the blue wire to
the wire that provides a low current positive signal from the factory door lock switch to the factory door lock control
relay.
The Green wire provides the first positive pulse during disarming, or the drivers door pulsed positive unlock
output. Connect this wire to the drivers door unlock relay that requires a low current positive signal to unlock only
the drivers door. If the vehicle does not have a separate drivers door relay, one will have to be added. Locate the
drivers door unlock motor wire and cut it at a convenient location to allow wiring of an optional relay. Connect the
door side of the cut wire to terminal 30 of the optional relay added. Connect the vehicle side of the cut wire to
terminal 87a of the optional relay added. Connect the green wire of the 3 pin harness to terminal 86 of the optional
relay added. Connect terminal 85 of the optional relay added to chassis ground. Most vehicles door lock/unlock
motor legs rest at ground, and switch +12 volts to the door lock/unlock motor legs for operation, if this is the case
in the vehicle you are working on, connect the remaining terminal, 87, to a fused + 12 volt source. In the rare
instance that the vehicle door lock/unlock motor legs rest at + 12 volts and switches ground to the door lock/unlock
motors, connect the remaining terminal, 87, to chassis ground.
The Blue/Red wire provides a pulse ground output when the unlock button of the transmitter is pressed a second
time after disarming. Because the vehicle you are working on requires a positive pulse from the factory door lock
switch to the factory door lock control relay, you will have to add a relay to invert the output polarity of this wire.
Connect the Blue/Red wire to terminal 86 of the optional added relay. Connect terminal 85 & 87 to a fuse + 12 volt
source. Connect terminal 30 to the low current door unlock wire from the factory door switch to the door unlock
control relay.
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