Neutral Safety Switch Interface - Directed Electronics 4400 Installation Manual

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 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
IMPORTANT! Always perform 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 mechanical 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. The
following test must be performed before the vehicle is released to the customer.
NOTE:
You must complete the remote start system installation before doing the following test.
Ensure that the remote start system is functioning normally. This includes connecting to the brake
18
Figure B
© 2002
Directed Electronics, Inc.