Hood Pin Switch Detail; Shock Sensor By-Pass; Ignition 3 Output; Gm Vats Key Override - Audiovox Car Security System AX-900 Installation Manual

Blue Wire: (-) Instant Trigger Input
This is the instant on ground trigger input wire. This wire must be connected to the hood and trunk pin
switches previously installed.
Note: This wire will be shunted when remote control channel 2 is accessed, (trunk release). This wire will
remain shunted all the while there is ground present and for 5 seconds after the ground is removed.
This allows the operator to open the trunk via the remote transmitter without having to first disarm
the alarm system. See below for wiring detail.
Blue w/Black Trace Wire: Ignition 3 Output
This wire provides a 300mA ground output that becomes active 3 seconds before the Remote Start Unit
initializes, and remains grounded while running plus an additional 4 seconds after the Remote Start Unit
turns off. In all of the applications described below, a relay will be required.
This wire can be used to accommodate the following situations:
A. Shock Sensor By Pass:
If there is a Non Plug in Shock Sensor used with the alarm system and it is not shunted during the
Remote Start activation period, then vibration from the running vehicle can cause the alarm to trigger. In
this case, connect the Blue/Black Wire to terminal #86 of a external relay. Connect terminal # 85 of
the relay to a fused + 12 volt battery source. Cut the shock sensor trigger wire and connect one end
of the cut wire to terminal #30 and the other end of the cut wire to terminal #87a. Just before the
Remote Start unit is activated, the relay contacts will open, preventing the shock sensor's operation
until the Remote Start unit shuts off.
B. Ignition 3 Output:
Some newer vehicles use a third ignition wire which is required to start and keep the vehicle's engine
running. If this is the case, connect the Blue/Black wire to terminal #86 of an external relay. Connect
terminal # 30 & # 85 to a fused + 12 volt battery source rated for a minimum of 25 Amp. Connect
terminal # 87 to the third ignition wire in the vehicle.
C. GM VATS Key Override:
If the vehicle has the General Motors VATS system installed, you will need to bypass the system while
the vehicle is operating under the control of the Remote Start Unit. To Do This;
1. Measure the resistance of the resistor pellet on the ignition key then select a resistor within 5% of
the key's value from the resistor pack supplied.
2. Locate the pair of VATS wires in the vehicle, usually a pair of thin gauge wires running from the
ignition switch to the VATS control module.
NOTE: These wires are typically White w/ Black trace and Violet w/ Yellow trace, however in later model
Cadillacs, they are run through an orange sleeve, and are either both Black, both Yellow, or both
White wires. Consult the factory service manual for additional information.
3. Connect the Blue/Black Wire from the Remote Start Unit to terminal #86 of an external relay.
Connect terminal #85 of the relay to a fused + 12 volt battery source.

Hood Pin Switch Detail

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