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16 © 2001 Directed Electronics, Inc. Vista, CA
Connect this wire to the toggle (override) switch as shown in Figure A. Connect the other wire from the toggle switch
to the PARK/NEUTRAL switch in the vehicle. This wire will test with ground with the gear selector either in PARK or
NEUTRAL. This will prevent the vehicle from accidentally being started while in a drive gear. This input MUST rest at ground
in order for the remote start system to operate. Connected properly the vehicle will only start while in PARK or NEUTRAL.
In some vehicles, the PARK/NEUTRAL position switch activates a factory starter lock-out that will not allow the
starter to operate in a drive gear. In these vehicles, connect this wire to the toggle switch as shown in Figure B.
Connect the other wire from the toggle switch to chassis ground.
Figure A Figure B
IMPORTANT! Always use the Vehicle Safety Check section of this guide to verify that the vehicle
cannot be started in ANY drive gear and that the override switch is functioning properly.
neutral safety switch interface
Some vehicles combine the column shift mechanism and the mechanical neutral safety switch into one mechan-
ical part. In these vehicles, it is impossible to interface the remote start system before the neutral safety switch.
With this type of vehicle, if the vehicle is left in a drive gear and the remote start system is activated, the vehicle
will move and may cause damage to persons or property.
According to available information, vehicles known to be manufactured this way are most General Motors trucks,
sport utility vehicles and column shifting passenger vehicles. Available information also indicates that pre-1996
Dodge Dakota pickups with 2.5 liter motors are also manufactured this way.
GM vehicles that have the neutral safety switch built into the column shifter can usually be identified by a purple
starter wire. Typically, vehicles that use an outboard mechanical switch use a yellow wire from the ignition switch
to the mechanical switch and a purple wire from the mechanical switch to the starter itself. Remember, this is
only a rule of thumb and is not intended as a substitute for proper testing.
IMPORTANT! Please see vehicle Safety Check section of this guide for testing procedures.
H2/6 BLACK/WHITE neutral safety switch input