Night Guard Home Surveillance System C3-RS-665 User Manual
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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 selector 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, and 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. Shown is a typical GM
Park/Neutral ECM input circuit. To connect the 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 Remote Start Unit in.
2. Connect the BLACK/WHITE Neutral Safety Switch wire (H7/4) to this
reference wire.
NOTE: If the optional remote starts enable toggle switch is installed,
connect the one side of the enable switch to this reference wire and
connect the other side of the enable switch to the BLACK/WHITE Neutral
Safety Switch wire (H7/4) 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.
Ignition
P
1
P
2
P
D
P
N
P
R
P
Electronic Control Module (ECM)
Solid State, Do Not Measure
Resistance
To Neutral Safety
Switch Input wire
Black/White
(
H7/4
)
Optional Enable Switch
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
margin of safety and will prevent the vehicle with a Mechanical Neutral
Start Switch from starting in gear.
WE ADVISE THAT YOU MAINTAIN THE FACTORY CIRCUIT