Clifford Matrix RS2 User manual

©
2001 Directed Electronics, Inc. N909553 7-01
Rev. N/C 1.0
Matrix RS2
Installation Guide

Bitwriter
™
, Code Hopping
™
, DEI
®
, Directed
®
, Doubleguard
®
, ESP
™
, FailSafe
®
, Ghost Switch
™
,
Learn Routine
™
, Nite-Lite
®
, Nuisance Prevention Circuitry
®
, NPC
®
, Revenger
®
, Silent Mode
™
, Soft
Chirp
®
, Stinger
®
, Valet
®
, Vehicle Recovery System
®
, VRS
®
, and Warn Away
®
are all Trademarks or
Registered Trademarks of Directed Electronics, Inc., Vista, California.
The Bitwriter®(p/n 998T)
requires chip version 1.4 or
newer to program this unit.

www.clifford.com 3
Table of Contents
WWhhaattIIssIInncclluuddeedd...........................................4
WWaarrnniinngg!!SSaaffeettyyFFiirrsstt.....................................4
IInnssttaallllaattiioonnPPooiinnttssttooRReemmeemmbbeerr....................5
Before Beginning the Installation...............5
Finding the Tachometer Wire ....................6
Finding the Wait-to-Start Bulb Wire
for Diesels..................................................6
After the Installation..................................7
PPrriimmaarryyHHaarrnneessss((HH11))
WWiirreeCCoonnnneeccttiioonnGGuuiiddee................................7
AAuuxxiilliiaarryyHHaarrnneessss((HH22))
WWiirreeCCoonnnneeccttiioonnGGuuiiddee..............................12
RReellaayySSaatteelllliitteeKKeeyySSwwiittcchhIInntteerrffaacceeWWiirree
CCoonnnneeccttiioonnGGuuiiddee((HHeeaavvyyGGaauuggeeWWiirreess))....15
RReemmootteeSSttaarrttRRiibbbboonnPPlluugg-IInnHHaarrnneessss.......16
RReemmootteeSSttaarrttHHaarrnneessss((HH33))
WWiirreeCCoonnnneeccttiioonnGGuuiiddee..............................16
NNeeuuttrraallSSaaffeettyySSwwiittcchhIInntteerrffaaccee....................19
Testing the Neutral Safety Switch ............19
11999955aannddNNeewweerrVVeehhiiccllee
AAnnttii-TThheeffttSSyysstteemmss((IImmmmoobbiilliizzeerrss))..............21
Passlock I and Passlock II
(PL-1 and PL-2) ......................................21
Passkey III (PK-3),
Transponder-Based Systems .....................22
BByyppaassssiinnggGGMMVVeehhiiccllee
AAnnttii-TThheeffttSSyysstteemmss((VVAATTSS)).........................23
PPlluugg-IInnHHaarrnneesssseess........................................24
Super Bright LED....................................24
Valet/Program Switch .............................24
SShhoocckkSSeennssoorrHHaarrnneessss,,44-PPiinnCCoonnnneeccttoorr.....25
PPrrooggrraammmmeerrIInntteerrffaaccee,,33-PPiinnPPoorrtt................25
DDoooorrLLoocckkHHaarrnneessss((HH44))
WWiirreeCCoonnnneeccttiioonnGGuuiiddee..............................26
PPrrooggrraammmmiinnggJJuummppeerrss.................................26
Digital Tach Filter On/Off.......................26
Light Flash Jumper ..................................27
TTrraannssmmiitttteerr//RReecceeiivveerrLLeeaarrnnRRoouuttiinnee............27
TTrraannssmmiitttteerrCCoonnffiigguurraattiioonnss.........................29
4-Button Transmitter Configuration........28
Optional Radar Master Transmitter .........30
MMuullttii-LLeevveellSSeeccuurriittyyAArrmmiinngg.......................30
SSyysstteemmFFeeaattuurreessLLeeaarrnnRRoouuttiinnee....................30
FFeeaattuurreeMMeennuuss.............................................33
Feature Menu 1 - Basic Features ..............33
Feature Menu 2 - Advanced Features.......33
Feature Menu 3 - Remote Start Features..34
FFeeaattuurreeDDeessccrriippttiioonnss....................................34
Feature Menu 1 - Basic Features ..............34
Feature Menu 2 - Advanced Features.......36
Feature Menu 3 - Remote Start Features..37
FFaallsseeAAllaarrmmCCoonnttrroollTTeecchhnnoollooggyy((FFAACCTT))...39
VVaalleettMMooddee..................................................39
TTiimmeerrMMooddee................................................40
TTaabblleeooffZZoonneess.............................................40
SShhuuttddoowwnnDDiiaaggnnoossttiiccss.................................41
LLoonnggTTeerrmmEEvveennttHHiissttoorryy...........................41
SSaaffeettyyCChheecckk................................................42
TTrroouubblleesshhoooottiinngg..........................................43
Alarm Troubleshooting ............................43
Remote Start Troubleshooting..................44
WWiirriinnggQQuuiicckkRReeffeerreenncceeGGuuiiddee...................48

4
©
2001
Directed Electronics, Inc.
What Is Included
The following components are included with this installation kit:
Warning! Safety First
The following safety warnings must be observed at all times:
➤➤Due to the complexity of this system, installation of this product must only be performed by an
authorized Directed dealer.
➤➤When properly installed, this system can start the vehicle via a command signal from the remote
control transmitter. Therefore, never operate the system in an area that does not have adequate
ventilation. The following precautions are the sole responsibility of the user; however, authorized
Directed dealers should make the following recommendations to all users of this system:
1. Never operate the system in an enclosed or partially enclosed area without ventilation (such
as a garage).
2. When parking in an enclosed or partially enclosed area or when having the vehicle serviced,
the remote engine starting system must be disabled using the installed toggle switch.
3. It is the user's sole responsibility to properly handle and keep out of reach from children all
remote transmitters to assure that the system does not unintentionally remote start the vehicle.
4. THE USER MUST INSTALL A CARBON MONOXIDE DETECTOR IN OR ABOUT THE
LIVING AREA ADJACENT TO THE VEHICLE. ALL DOORS LEADING FROM
ADJACENT LIVING AREAS TO THE ENCLOSED OR PARTIALLY ENCLOSED
VEHICLE STORAGE AREA MUST AT ALL TIMES REMAIN CLOSED.
➤➤One control module
➤➤One XHF receiver/antenna
➤➤Two four-button remote transmitters
➤➤One 514C siren
➤➤One plug-in LED indicator with bezel
➤➤The plug-in Valet/program switch
➤➤One plug-in shock sensor
➤➤A hood pinswitch
➤➤A toggle override switch
➤➤One 5-pin harness with relay satellite
➤➤12-Pin, 11-wire primary harness (H1)
➤➤3-Pin auxiliary harness (H2)
➤➤3-Pin door lock harness (H4)
➤➤6-Pin remote start harness (H3)
➤➤One warning label
➤➤Two window decals
➤➤One patent card
➤➤One warranty registration
➤➤One installation guide
➤➤One owner’s guide

➤➤Use of this product in a manner contrary to its intended mode of operation may result in
property damage, personal injury, or death. Except when performing the Safety Check outlined
in this installation guide, (1) Never remotely start the vehicle with the vehicle in gear, and (2)
Never remotely start the vehicle with the keys in the ignition. The user will be responsible for
having the neutral safety feature of the vehicle periodically checked, wherein the vehicle must
not remotely start while the car is in gear. This testing should be performed by an authorized
Directed dealer in accordance with the Safety Check outlined in this product installation guide.
If the vehicle starts in gear, cease remote engine starting operation immediately and consult with
the user to fix the problem immediately.
➤➤After the remote engine starting module has been installed, test the remote engine starting
module in accordance with the Safety Check outlined in this installation guide. If the vehicle
starts when performing the Neutral Safety Shutdown Circuit test, the remote engine starting
unit has not been properly installed. The remote engine starting module must be removed or
properly reinstalled so that the vehicle does not start in gear. All installations must be performed
by an authorized Directed dealer. OPERATION OF THE REMOTE START MODULE IF THE
VEHICLE STARTS IN GEAR IS CONTRARY TO ITS INTENDED MODE OF OPERATION.
OPERATING THE REMOTE START SYSTEM UNDER THESE CONDITIONS MAY
RESULT IN PROPERTY DAMAGE OR PERSONAL INJURY. IMMEDIATELY CEASE THE
USE OF THE UNIT AND REPAIR OR DISCONNECT THE INSTALLED REMOTE START
MODULE. DIRECTED WILL NOT BE HELD RESPONSIBLE OR PAY FOR INSTAL-
LATION OR REINSTALLATION COSTS.
Installation Points to Remember
Before Beginning the Installation
➤➤Please read this entire installation guide before beginning the installation. The installation of this
remote engine starting system requires interfacing with many of the vehicle’s systems. Many new
vehicles use low-voltage or multiplexed systems that can be damaged by low resistance testing
devices, such as test lights and logic probes (computer safe test lights). Test all circuits with a
high quality digital multi-meter before making connections.
➤➤Do not disconnect the battery if the vehicle has an anti-theft-coded radio. If equipped with an
IMPORTANT! This product is designed for fuel-injected, automatic transmission
vehicles only. Installing it in a standard transmission vehicle is dangerous and is
contrary to its intended use.
www.clifford.com 5

air bag, avoid disconnecting the battery if possible. Many airbag systems will display a diagnostic
code through their warning lights after they lose power. Disconnecting the battery requires this
code to be erased, which can require a trip to the dealer.
➤➤Check with the customer on LED status indicator location.
➤➤Remove the domelight fuse. This prevents accidentally draining the battery.
➤➤Roll down a window to avoid being locked out of the car.
Finding the Tachometer Wire
To test for a tachometer wire, a multimeter capable of testing AC voltage must be used. The tachometer
wire will show between 1V and 6V AC. In multi-coil ignition systems, the system can learn individual
coil wires. Individual coil wires in a multi-coil ignition system will register lower amounts of AC
voltage. Also, if necessary, the system can use a fuel injector control wire for engine speed sensing.
How to Find a Tachometer Wire With Your Multimeter
1. Set to ACV or AC voltage (12V or 20V is fine).
2. Attach the (-) probe of the meter to chassis ground.
3. Start and run the vehicle.
4. Probe the wire you suspect of being the tachometer wire with the red probe of the meter.
5. If this is the correct wire the meter will read between 1V and 6V.
Finding the Wait-To-Start Bulb Wire for Diesels
In diesel vehicles it is necessary to interface with the wire that turns on the wait-to-start light in the
dashboard. This wire illuminates the bulb until the vehicle’s glow plugs are properly heated. When
the light goes out the vehicle can be started. This wire is always available at the connector leading
to the bulb in the dashboard. It can also be found at the Engine Control Module (ECM) in many
vehicles.
How to Test and Determine the Polarity of the Wait-To-Start Wire
1. Set your multimeter to DCV or DC voltage (12 or 20V is fine).
2. Attach the (+) probe of the meter to (+)12V.
3. Probe the wire that you suspect leads to the bulb with the (-) probe of the meter.
4. Turn the ignition switch to the ON position.
IMPORTANT! Do not test tachometer wires using a test light or logic probe! This will
damage the vehicle.
6
©
2001 Directed Electronics, Inc.

www.clifford.com 7
5. If the meter indicates 12 volts until the light goes out you have isolated the correct wire and the
wire's polarity is negative (ground while the bulb is on).
6. If the meter reads zero volts until the light goes out and then reads 12 volts, you have isolated
the correct wire and the wire's polarity is positive.
After the Installation
➤➤Test all functions. The “Using Your System” section of the Owner's Guide is helpful for testing.
➤➤When testing, don’t forget that this system is equipped with False Alarm Control Technology
(FACT). FACT can bypass trigger zones, making them appear to stop working. See the False
Alarm Control Technology section of this guide.
➤➤Review and complete the Safety Check section of this guide prior to the vehicle reassembly.
Primary Harness (H1) Wire Connection
Guide
The primary harness supplied with this unit is the standard 12-pin harness used by Directed security
systems. The functions of all the wires that are used in the primary harness are outlined in the
following wiring diagram and the wire connections are described in the wire connection guides.
___
___
___
___
___
___
___
___
___
___
___
___
RED/WHITE (-) 200mA Channel 2 Validity Output
RED (+) Constant Power Input
BROWN (+) Siren Output
No Wire
BLACK (-) Chassis Ground Input
VIOLET (+) Door Trigger Input, Zone 3
BLUE (-) multiplexed Input, Zone 4
GREEN (-) Door Trigger Input, Zone 3
BLACK/WHITE (-) 200 mA Domelight Supervision Output
WHITE/BLUE (-) Remote Start Activation Input
WHITE (+)/(-) Selectable Light Flash Output
ORANGE (-) 500 mA Armed Output
H1/1
H1/2
H1/3
H1/4
H1/5
H1/6
H1/7
H1/8
H1/9
H1/10
H1/11
H1/12

H1/1 ORANGE (-) Ground-When-Armed Output
This wire supplies a (-) 500 mA ground as long as the system is armed. This output ceases as soon
as the system is disarmed. The ORANGE wire is pre-wired to control the Directed P/N 8618
starter interrupt relay.
NOTE: If connecting the H1/1 ORANGE wire to control another module, such as a P/N 529T or
P/N 530T window controller, a 1 amp diode (type 1N4004) is required. Insert the diode as shown
in the following diagram:
H1/2 WHITE (+/-) selectable light flash output
As shipped, the H1/2 WHITE wire should be connected to the (+) parking light wire. If the light
flash polarity jumper near the main plug is moved to the opposite position (see the Programming
Jumper section of this installation guide), this wire supplies a (-) 200 mA output. This is suitable for
driving (-) light control wires in Toyota, Lexus, BMW, some Mitsubishi, some Mazda, and other
models.
NOTE: For parking light circuits that draw 10 amps or more, the jumper must be switched to a
(-) light flash output. (See the Programming Jumpers section of this guide.) P/N 8617 or a standard
automotive SPDT relay must be used on the H1/2 light flash output harness wire.
IMPORTANT! Never interrupt any wire other than the starter wire.
8
©
2001 Directed Electronics, Inc.

(+) POSITIVE LIGHT FLASH OUTPUT
(-) LIGHT FLASH OUTPUT
H1/3 WHITE/BLUE Remote Start (-) Activation Input
A momentary input on this wire will start or stop the motor, just as transmitting Channel 3 from
the remote transmitter does. It is often connected to an optional momentary push-button switch to
make access to Valet Take Over Mode and Timer Mode more convenient.
H1/4 BLACK /WHITE (-) 200 mA Domelight Supervision Output
Connect this wire to the optional domelight supervision relay as shown in the following diagram.
IMPORTANT! The H1/4 output is only intended to drive a relay. It cannot be connected
directly to the domelight circuit because the output cannot support the current draw of
one or more light bulbs.
www.clifford.com 9

H1/5 GREEN (-) Door Trigger Input, Zone 3
Most vehicles use negative door trigger circuits. Connect the green wire to a wire which shows
ground when any door is opened. In vehicles with factory delays on the domelight circuit, there is
usually a wire that is unaffected by the delay circuitry. This wire will report Zone 3.
H1/6 BLUE (-) Multiplex Input, Zone 4
Inputs shorter than 0.8 seconds will trigger the Warning Zone response, while inputs longer than
0.8 seconds will trigger the full alarm sequence. If installing an optional Directed dual stage sensor,
connect both the blue and the green wires of the optional sensor to this input. This wire will report
Zone 4.
H1/7 VIOLET (+) Door Trigger Input, Zone 3
This wire is used in vehicles that have a positive (+) switched dome light circuit. Connect the violet
wire to a wire that shows (+)12V when any door is opened, and ground when the door is closed.
This wire will report Zone 3.
10
©
2001 Directed Electronics, Inc.

www.clifford.com 11
H1/8 BLACK (-) Chassis Ground Connection
Remove any paint and connect this wire to bare metal, preferably with a factory bolt rather than
your own screw. (Screws tend to either strip or loosen with time.) We recommend grounding all
your components, including the siren, to the same point in the vehicle.
H1/10 BROWN (+) Siren Output
Connect this to the red wire of the siren. Connect the black wire of the siren to (-) chassis ground,
preferably at the same point you connected the control module’s black ground wire.
H1/11 RED (+)12V Constant Power Input
Before connecting this wire, remove the supplied fuse. Connect to the battery positive terminal or
the constant 12V supply to the ignition switch.
H1/12 RED/WHITE Channel 2, (-) 200 mA Output
When the system receives the code controlling Channel 2, for longer than 1.5 seconds, the
red/white wire will supply an output as long as the transmission continues. This is often used to
operate a trunk/hatch release or other relay-driven function.
IMPORTANT! Always use a fuse within 12 inches of the point you obtain (+)12V. Do
not use the 15A fuse in the harness for this purpose. This fuse protects the module
itself.

12
©
2001 Directed Electronics, Inc.
Auxiliary Harness (H2) Wire Connection
Guide
___
___
___
H2/1 GRAY/BLACK (-) Diesel Wait-To-Start Bulb Input
Connect this wire to the wire in the vehicle that sends the signal to turn on the WAIT-TO-START
bulb in the dashboard. In most diesels the wire is negative (ground turns on the bulb) and the
GRAY/BLACK wire can be directly connected to the wire in the vehicle. If the vehicle uses a
positive wire (12V to turn on the bulb) a relay must be used to change the polarity. Here are some
common colors of this wire:
➤➤Chevrolet and GMC trucks - Light blue or dark blue
➤➤Ford Trucks - Black/pink
➤➤Dodge Ram Trucks - Orange/black or black/orange
IMPORTANT! A 1-amp diode must be installed in line on the factory wire between the
wait-to-start indicator and the ECM. (See the following diagram for details.)
VIOLET/BLACK (-) 200 mA Channel 4 Programmable Output
LIGHT GREEN/BLACK (-) Factory Disarm Output
GRAY/BLACK (-) Diesel Wait-to-Start Bulb Input
H2/1
H2/2
H2/3
IMPORTANT! Never use this wire to drive anything except a relay or low-current input!
The transistorized output can only supply 200 mA of current. Connecting directly to a
solenoid, motor, or other high-current device will cause it to fail.

H2/2 LIGHT GREEN/BLACK (-) Factory Disarm Output
This wire sends a negative pulse every time the remote engine starting system is activated. This can
be used to pulse the disarm wire of the vehicle's factory anti-theft device. Use a relay to send a (-)
or (+) pulse to the disarm wire as shown in the diagrams below. This wire can also be used as a
special accessory output. (See Feature Descriptions section of this guide.)
RELAY FOR NEGATIVE (-) DISARM WIRE RELAY FOR POSITIVE (+) DISARM WIRE
www.clifford.com 13

14
©
2001 Directed Electronics, Inc.
H2/3 VIOLET/BLACK (-) 200 mA Channel
This wire provides a (-) 200mA output whenever the transmitter button(s) controlling Channel 4
is pressed. This output can be programmed to provide the following types of outputs (see also the
Feature Menus section):
➤➤Validity: Output that will send a signal as long as the transmission is received.
➤➤Latched: Output that will send a signal when the Channel 4 button(s) is pressed and will
continue until the same button(s) is pressed again.
➤➤Latched/reset with ignition: This works similar to the latched output, but will also reset (output
will stop) when the ignition is turned on and then off. This output can also be shut off at any
time by pressing the transmitter button that controls Channel 4 again.
➤➤30-second timed: Output that will send a continuous signal for 30 seconds.
➤➤Second unlock output: This output can also be programmed to provide a second unlock pulse
whenever the disarm button is pressed within 15 seconds after disarming the system. This
setting could be used to unlock the passenger doors when installing progressive door locks, for
instance.
NOTE: Programming Channel 4 for second unlock will link the violet/black wire to the unlock
button. Pressing the unlock button once will send the output to the H4/A or H4/C unlock wire.
Pressing the unlock button a second time within 15 seconds will send a negative (-) unlock pulse to
the violet/black wire.
IMPORTANT! Never use this wire to drive anything but a relay or a low-current input!
This transistorized output can only supply 200 mA, and connecting directly to a
solenoid, motor, or other high-current device will cause the module to fail.

www.clifford.com 15
Relay Satellite Key Switch Interface Wire
Connection Guide (Heavy Gauge Wires)
The five heavy gauge wires coming from the relay satellite are used to energize high current circuits
in the vehicle. It is crucial that these connections are well-made and capable of handling the current
demands. For this reason, Scotch-Locks, T-taps and other such connectors are strongly discouraged.
___
___
___
___
___
___
RED (2) (+) 12V Input for Relays
Remove the two 30-amp fuses prior to connecting these wires and do not replace them until the
satellite has been plugged into the control module. These wires are the source of current for all the
circuits the relay satellite will energize. They must be connected to a high current source. Since the
factory supplies (+)12V to the key switch that is used to operate the motor, it is recommended that
these wires be connected there.
NOTE: If the factory supplies two separate (+) 12V feeds to the ignition switch, connect one RED
wire of the satellite to each feed at the switch.
PINK (+) Ignition Output
Connect this wire to the ignition wire in the vehicle.
ORANGE (+) Accessory Output
Connect this wire to the accessory wire in the vehicle that powers the climate control system.
PURPLE (+) Starter Output
Connect this wire to the starter wire in the vehicle.
PINK/WHITE (+) Output to Second Ignition Circuit
Connect this wire to the second ignition wire in the vehicle.
NOTE: For vehicles that do not have a second ignition wire, this connection is not required.
PINK/WHITE (+) Output to Second Ignition Circuit
PURPLE (+) Output to Starter Circuit
ORANGE (+) Output to Accessory Circuit
PINK (+) Output to Ignition Circuit
RED (+) High Current 12V Input
RED (+) High Current 12V Input
1
2
3
4
5
6

16
©
2001 Directed Electronics, Inc.
Remote Start Ribbon Plug-In Harness
___
___
___
___
___
Remote Start Harness (H3) Wire
Connection Guide
___
___
___
___
___
___
H3/1 BLUE (-) Status/Factory Security Rearm Output
This wire supplies a 200mA output as soon as the module begins the remote engine starting process.
It can be used with a relay to disconnect a sensor from the system as shown below. The H3/1 BLUE
wire can also be used to rearm a factory anti-theft system when the remote engine starting system
shuts down. (See the Feature Descriptions section of this guide.) To bypass an optional sensor:
BLACK/WHITE (-) Neutral Safety Switch Input
VIOLET/WHITE Tachometer Input Wire
BROWN (+) Brake Switch Shutdown Wire
GRAY (-) Hood Pinswitch Input, Zone 1
BLUE/BLACK (-) 200 mA Optional Third Ignition Output
BLUE (-) 200 mA Status/Factory Security Rearm Output
H3/1
H3/2
H3/3
H3/4
H3/5
H3/6
PURPLE (-) 200 mA Starter Relay Turn-On
ORANGE (-) 200 mA Accessory Relay Turn-On
PINK (-) 200 mA Ignition Relay Turn-On
YELLOW (+) Ignition Input to Remote Start
RED (+) Constant Power
1
2
3
4
5

www.clifford.com 17
H3/2 BLUE/BLACK (-) Optional Third Ignition Output
This output provides a 200mA output as soon as the remote engine starting system is activated. It
can be used to power a relay to energize a positive (+) third ignition as shown below. This output is
capable of driving two relays if necessary.
H3/3 GRAY (-) Hood Pinswitch Input, Zone 1
This wire MUST be connected to hood pinswitch. This input will disable or shut down the remote
engine starting system when the hood is opened. It will also trigger the security system if the hood
is opened while the system is armed and report Zone 1.
H3/4 BROWN (+) Brake Switch Input, Zone 1
This wire MUST be connected to the vehicle's brake light wire. This is the wire that shows (+) 12V
when the brake pedal is depressed. The remote engine starting system will be disabled or shut down
any time the brake pedal is depressed. This wire will also trigger the security system if the brake
pedal is pressed while the system is armed and will report Zone 1.
H3/5 VIOLET/WHITE Tachometer Input
This input provides the module with information about the engine's revolutions per minute
(RPMs). It can be connected to the negative side of the coil in vehicles with conventional coils. In
multi-coil and high energy ignition systems locating a proper signal may be more difficult. Once

18
©
2001 Directed Electronics, Inc.
connected, you must teach the system the tach signal. (See the Programming Jumpers section of this
guide.)
H3/6 BLACK/WHITE neutral safety switch input
Connect this wire to the provided 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 acciden-
tally being started while in a drive gear. This input MUST rest at ground in order for the remote
engine starting 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 perform the 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 engine starting system
before the neutral safety switch. With this type of vehicle, if the vehicle is left in a drive gear and
the remote engine starting 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. We suggest the following procedure to test for vehicles manufac-
tured in this way.
Testing the Neutral Safety Switch
1. Make sure there is adequate clearance to the front and rear of the vehicle because it may move
slightly.
2. Make sure the hood is closed and there are no remote engine starting shut-downs active.
3. Set the emergency brake.
4. Turn the key to the "run" position, this will release the shifter.
5. Place the car in drive (D).
6. Place your foot directly over the brake pedal, but do not depress it. Be ready to step on the brake
if the starter engages.
7. Activate the remote engine starting system.
8. If the starter engages, immediately depress the brake to shut the remote engine starting system
down. If the starter does not engage, no additional safety system is required.
IMPORTANT! You must complete the remote engine starting system installation before
doing the following test. Ensure that the remote engine starting system is functioning
normally. This includes connecting to the brake as a shut-down.
www.clifford.com 19

If the starter engages and the vehicle is a General Motors product or Dodge Dakota pickup, refer
to the following text and diagrams for an alternative shut-down method which will prevent the
starter from engaging. If the vehicle is not a General Motors product or a Dodge Dakota pickup,
please call Directed Technical Support for an alternative shut-down method. Do not return the
vehicle to the customer until this feature is properly installed!
Every vehicle built this way requires that the shifter be placed in park to remove the keys from
the ignition. As a result, it is possible to use the key-in-ignition sense switch to prevent remote
engine starting if the keys are in the ignition. The diagrams in this section illustrate how to accom-
plish this.
Diagram A, applies to all General Motors vehicles at the time of publication of this guide. Diagram
B applies to all pre-1996 Dodge Dakota pickup trucks with 2.5 liter motors. This solution has one
side effect - if the customer inserts the key in the ignition with the driver's door open, the remote
engine starting system will shut down. If this interface is used it is important to inform the
customer to close the driver’s door before inserting the key into the ignition when the remote
engine starting system is active. This will allow the customer to turn the key on and shut the
remote engine starting system down by pressing the brake without the key sense wire shutting
down the unit prematurely.
In addition, you must connect a tan (+) shut-down input to the yellow wire on the relay satellite
ribbon cable. This prevents the remote engine starting system from activating if the key is left in the
"run" position. If your remote engine starting system only has one tan input, you must use diodes
to isolate the ignition circuit from the brake switch input. However, due to future manufacturer
changes in vehicles, it is possible that this may not apply to all vehicles. In addition, color variations
are possible from model to model; make sure to test the circuit carefully. Please call Directed
Technical Support if you need assistance in making this interface.
IMPORTANT! Once the interface is complete, attempt to remote start the vehicle with
the door closed and the key in the ignition. The vehicle should not start. If it does,
recheck the connections.
20
©
2001 Directed Electronics, Inc.