ignition switch side of the Neutral Start Switch. If the vehicle you are working on does not have an Electrical
Neutral Safety Switch, it will be necessary to reconfigure the Remote Starts Wiring to accommodate
this vehicle. The information concerning the Mechanical Neutral Safety Switch provided below will help
you to determine if the vehicle you are working on has this type of safety switch and will provide alternate
wiring methods to accommodate this situation.
CAUTION!
REMEMBER TO RECONNECT THE BROWN/BLACK WIRE TEMPORARILY
DISCONNECTED IN STEP 3
DO NOT RELEASE THIS VEHICLE TO THE CONSUMER UNTIL YOU CONFIRM THE OPERATION OF
THE NEUTRAL SAFETY START FEATURE.
MECHANICAL NEUTRAL SAFETY SWITCH CONSIDERATIONS:
Mechanical neutral safety switch configurations differ slightly in that they do not offer the same level of safety
when installing a remote start device. Often when the ignition switch is turned off while the gear selector is
in any position other than park or neutral, the mechanical function will not allow the key to be turned to the
start position or be removed from the ignition cylinder. This configuration prevents mechanical operation while
the vehicle is in gear but offers no consideration for electrical operation. Because of this potential problem,
this installation requires the additional connection of a safety wire from the remote start device to the vehicle
Park/Neutral ECM Input or the vehicle key in sensor. This connection will prevent remote start operation if
the key is left in the ignition switch regardless of the gear selectors position.
PARK / NEUTRAL ECM INPUT:
The Park / Neutral ECM input is the preferred method of installation. This not only maintains the integrity of
the factory circuit, it is also the easiest to install, providing the vehicle you are working on has this ECM input.
The installation required for this application (shown below), indicates the slight reconfiguration of the control
switch wiring and the addition of a 4000 series diode. Shown is a typical GM Park/Neutral ECM input circuit.
To connect the Audiovox remote start unit to the GM Park / Neutral ECM input:
1. Locate the Orange / Black reference wire in the" C2 " connector found at the ECM in GM B Body vehicles
or, locate the equivalent reference wire in the vehicle you are installing the Audiovox Remote Start Unit in.
2. Connect the Cathode, (Striped) end, of a 4000 series diode to this reference wire.
3. Connect the Anode, (Non Striped) end, of the diode to one side of the Remote Starts enable switch.
4. Connect the other side of the enable switch to the Black/White enable input wire of the Remote Start unit.
The reference diagram below shows a typical GM B Body ECM reference wire and how it is to be connected
to the Remote Start Unit.
KEY IN SENSOR CIRCUITS:
If the vehicle you are working on does not have or you cannot locate the ECM reference wire, there are two
alternatives available. Although not preferred, the vehicle Key In Sensor may be reconfigured to allow a
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