Directed Electronics PYTHON N426P User manual

© 2005 Directed Electronics, Inc. Vista, CA
N426P 07-05
NOTE: This product is intended for installation by a professional installer only!
Any attempt to install this product by any person other than a trained professional
may result in severe damage to a vehicle’s electrical system and components.
MMooddeell446600HHPP
IInnssttaallllaattiioonnGGuuiiddee

Bitwriter
®
, Code Hopping™, Doubleguard
®
, ESP™, FailSafe
®
, Ghost Switch™, Learn
Routine™, Nite-Lite
®
, Nuisance Prevention
®
Circuitry, Revenger
®
, Silent Mode™, Soft Chirp
®
,
Stinger
®
, Valet
®
, Vehicle Recovery System
®
, VRS
®
, and Warn Away
®
are all Trademarks or Registered
Trademarks of Directed Electronics, Inc.
The Bitwriter®(p/n 998T)
requires chip version 1.4 or
newer to program this unit.
wwwwww..ddiirreecctteecchhss..ccoomm
DDiirreeccttFFaaxx880000--999999--11332299TTeecchhnniiccaallSSuuppppoorrtt880000--775533--00880000
These resources are for authorized Directed Dealer use only.

©
2005 Directed Electronics, Inc. all rights reserved 3
Table of Contents
PPrriimmaarryyHHaarrnneessss((HH11))WWiirreeCCoonnnneeccttiioonnGGuuiiddee........................................................................................................................................................44
Primary Harness Wiring Diagram.............................................................................................4
Primary Harness Wiring Instructions........................................................................................4
DDoooorrLLoocckkHHaarrnneessss((HH22)),,33--PPIINNCCoonnnneeccttoorr.............................................................................
...............................................................................1100
PPeerriipphheerraallPPlluugg--IInnHHaarrnneesssseess...........................................................
...................................................................................................................................................1100
Super Bright LED, 2-Pin WHITE Plug..................................................................................10
Valet/Program Switch, 2-Pin BLUE Plug ................................................................................11
Programmer Interface, 3-Pin BLACK Plug .............................................................................11
Mounting the Receiver/Antenna .............................................................................................11
OOnn--BBooaarrddDDuuaall--SSttaaggeeSSh
hoocckkSSeennssoorr......................................................................................................................................................................................1122
OOppttiioonnaallSSeennssoorrHHaarrnneessss,,44--ppiinnCCoonnnneeccttoorr...............................................................................................................
.................................................1133
PPrrooggrraammmmiinnggJJuummppeerr.............................................................................................................
.....................................................................................................................1133
Light Flash Jumper..................................................................................................................13
BByyppaassssiinnggSSeennssoorrIInnppuuttss...........................
.................................................................................................................................................................................................1144
SSyysstteemmFFeeaattuurreessLLeeaarrnnRRoouuttiinnee......................................................................................................................................................................................................1144
SSyysstteemmFFeeaattuurreessMMeennuuss...................................................................................................
...........................................................................................................................1177
Menu #1 - Basic Features........................................................................................................17
Menu #2 - Advanced Features.................................................................................................17
FFeeaattuurreeDDeessccrriippttiioonnss.........................
.............................................................................................................................................................................................................1188
Menu #1 - Basic Features........................................................................................................18
TTrraannssmmiitttteerrCCoonnffiigguurraattiioonnss.....................................................................................................................................
.............................................................................2233
Standard Configuration...........................................................................................................23
Expanded Configuration ........................................................................................................23
DDiiaaggnnoossttiiccss.......................................................................................
...........................................................................................................................................................................2244
Arm/Disarm Diagnostics.........................................................................................................24
System Status Chirps...............................................................................................................24
Table of Zones ........................................................................................................................25
LLoonnggT
TeerrmmEEvveennttHHiissttoorryy......................................................................................................................................................................................................................2255
MMuullttii--LLeevveellSSeeccuurriittyyAArrmmiinngg...........................................................................................
...................................................................................................................2266
MMuullttii--LLeevveellSSeeccuurriittyyaarrmmiinnggaalllloowwsstthheeo
oppeerraattoorrttoosseelleeccttwwhhiicchhiinnppuuttssaannddsseennssoorrssaarreeaaccttiivveedduurriinngg
aappaarrttiiccuullaarraarrmmiinnggccyyccllee..FFoorraaffuulllld
deessccrriippttiioonnooffMMuullttii--LLeevveellSSeeccuurriittyyAArrmmiinnggooppeerraattiioonnffoorrtteessttiinngg
ppuurrppoosseessrreeffeerrttootthheeoowwnneerr''ssmmaannuuaal
l....................................................................................................................................................................................2266
OOppttiioonna
allVVeehhiicclleeRReeccoovveerryySSyysstteemm((VVRRSS®®))..............................................................................................................................................................2266
NNuuiissaanncceePPrreevveennttiioonn®®CCiirrccuuiittrryy...............................................................................................................
...................................................................................2266
RRaappiiddRReessuummeeLLooggiicc...........................................................................
...........................................................................................................................................................2266
TTrroouubblleesshhoooottiinngg.........
...........................................................................................................................................................................................................................................2277
WWiirriinnggQQuuiicckkRReeffeerreenncceeGGuuiiddee.......................................................................................................
...............................................................................................2299

4
©
2005
Directed Electronics, Inc. all rights reserved
Primary Harness (H1) Wire Connection Guide
Primary Harness Wiring Diagram
___
___
___
___
___
___
___
___
___
___
___
___
Primary Harness Wiring Instructions
This guide describes in detail the connection of each wire. Also included are possible applications
of each wire. This system was designed with the ultimate in flexibility and security in mind. Many
of the wires have more than one possible function. Please read carefully to ensure a thorough under-
standing of this unit.
H1/1 ORANGE (-) ground-when-armed output
This wire supplies a (-) 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 8618 starter kill relay. It can supply
up to 500 mA of current.
NOTE: If using the H1/1 ORANGE wire to activate an add-on accessory such as window
automation, pager or voice module a 1Amp diode must be installed to ensure proper operation.
Insert the diode as shown in the following diagram.
RED/WHITE (-) 200 mA Channel 2 Output
RED (+) Constant Power Input
BROWN (+) Siren Output
YELLOW (+) Switched Ignition Input, Zone 5
BLACK (-) Chassis Ground Input
VIOLET (+) Door Trigger Input, Zone 3
BLUE (-) Instant Trigger Input, Zone 1
GREEN (-) Door Trigger Input, Zone 3
BLACK/WHITE (-) 200 mA Domelight Supervision Output
WHITE/BLUE (-) 200 mA Channel 3 Programmable Output
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

©
2005 Directed Electronics, Inc. all rights reserved 5
H1/2 WHITE (+/-) light flash output
As shipped, the H1/2 WHITE wire should be connected to the (+) parking light wire. If the light flash
polarity jumper is moved to the (-) 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 systems 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 wire.
IMPORTANT! DO NOT connect this wire to a negative vehicle light flash wire before
changing the programming jumper to the negative polarity position or damage to
vehicle light circuit may occur.
IMPORTANT! Never interrupt any wire other than the starter wire.

6
©
2005
Directed Electronics, Inc. all rights reserved
H1/3 WHITE/BLUE 200 mA (-) channel 3 output
This wire provides a (-) 200 mA output whenever the transmitter button(s) controlling channel
three is pressed. This output can be programmed to provide the following types of output (see
System Features Learn Routine section of this guide):
➤➤A vvaalliiddiittyyoutput will send a signal as long as the transmission is received.
➤➤A llaattcchheeddoutput will send a signal continuously when the channel three button(s) is pressed and
released. The signal will continue until channel three is pressed again.
➤➤A llaattcchheedd//rreesseettwwiitthhiiggnniittiioonnoutput works similar to the latched output, but will also reset
(output will stop) when the ignition is turned on and then off.
➤➤A 3300sseeccoonnddttiimmeeddoutput will send a signal for 30 seconds when channel three is pressed. This
output can be shut off during the 30-second period by pressing Channel 3 again.
➤➤This output can also be programmed to provide a sseeccoonndduunnlloocckkppuullsseewhen the unlock button
is pressed a second time after disarming the system. This can be used to unlock the passenger
doors when installing progressive door locks.
H1/4 BLACK/WHITE (-) 200 mA domelight supervision output
Connect the H1/4 wire to the optional domelight supervision relay as shown in the following
diagram:
IMPORTANT! This output is only intended to drive a relay. It cannot be connected
directly to the domelight circuit, as the output cannot support the current draw of one
or more bulbs.
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.

©
2005 Directed Electronics, Inc. all rights reserved 7
H1/5 GREEN (-) door trigger input
Most vehicles use negative door trigger circuits. Connect the green wire to a wire showing ground
when any door is opened. When connecting to newer model vehicles there is generally a need to use
individual door triggers. See DirectFax document 1076 for wiring instructions. This wire will report
Zone 3.
NOTE: If using a door trigger wire that has a delay, Advanced Menu 2, feature 6 or the 998T
Bitwriter
®
can be used to turn Bypass Notification off.
H1/6 BLUE (-) instant trigger input
This input will respond to a negative input with an instant trigger. It is ideal for hood and trunk pins
and will report on Zone 1. It can also be used with Directed single-stage sensors. The H1/6 blue
instant trigger wire can also be used to shunt sensors during operation of auxiliary channels or remote
start. (See
Bypassing Sensor Inputs section of this guide.)
H1/7 VIOLET (+) door trigger input
This type of dome circuit is used in many Ford products. Connect the violet wire to a wire that shows
(+)12V when any door is opened. This wire will report Zone 3.
NOTE: If using a door trigger wire that has a delay, Advanced Menu 2, feature 6 or the 998T
Bitwriter
®
can be used to turn Bypass Notification off.

8
©
2005
Directed Electronics, Inc. all rights reserved
H1/8 BLACK (-) chassis ground connection
Connect this wire to a clean, paint-free sheet metal location (driver kick panel) using a factory bolt
that DOES NOT have any vehicle component grounds attached to it. A screw should only be used
when in conjunction with a two-sided lock washer. Under dash brackets and door sheet metal are
not acceptable ground points. It is recommended that all security components be grounded at the
same location.
H1/9 YELLOW (+) ignition input
Connect this wire to the (+) 12 volts ignition wire. This wire is pre-wired to the starter kill relay and
must show (+) 12 volts with the key in RUN position and during cranking. Take great care that this
wire cannot be shorted to the chassis at any point.
\\\\\\\
H1/10 BROWN (+) siren output
Connect this to the RED wire of the Revenger
®
siren. Connect the BLACK wire of the siren to (-)
chassis ground, preferably at the same point you connect the control module’s BLACK ground wire.

©
2005 Directed Electronics, Inc. all rights reserved 9
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.
NOTE: 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.
H1/12 RED/WHITE 200 mA (-) channel 2 output
When the system receives the code controlling channel 2 for longer than 1.5 seconds, the
RED/WHITE 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! Never use this wire to drive anything but a relay or a 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.

10
©
2005
Directed Electronics, Inc. all rights reserved
Door Lock Harness (H2), 3-PIN Connector
___
___
___
NOTE: For detailed instructions about connecting to the vehicle’s power door lock systems, refer
to the Door Lock Wiring guide (Document No. 1041) available to authorized dealers only from the
technical resources listed at the front of this guide.
Peripheral Plug-In Harnesses
Super Bright LED, 2-Pin WHITE Plug
The super bright LED operates at (+) 2 volt DC and plugs into the two-pin WHITE port. Make
sure the LED wires are not shorted to ground as the LED will be damaged. Multiple LED’s can be
used, but they must be wired in series. The LED fits into a 9/32-inch mounting hole. Be sure to
check for clearance prior to drilling the mounting hole.
DIA-41
IMPORTANT! The door lock outputs are low current and should not be attached
directly to any high current device; they are only to be used to activate relays
Blue (-) Unlock, (+) Lock Output
Empty Unless Using 451M
Green (-) Lock, (+) Unlock Output
H2/A
H2/B
H2/C

©
2005 Directed Electronics, Inc. all rights reserved 11
Valet/Program Switch, 2-Pin BLUE Plug
The Valet/Program switch should be accessible from the driver’s seat. It plugs into the BLUE port on
the side of the unit. Since the system features Valet by using the remote transmitter, the switch can
be well hidden. Consider how the switch will be used before choosing a mounting location. Check
for rear clearance before drilling a 9/32-inch hole and mounting the switch.The GRAY wire in the
two-pin plug may also be used as a (+) ghost switch input and can be connected to any (+) switch in
the vehicle. (See
Feature Descriptions section of this guide.)
Programmer Interface, 3-Pin BLACK Plug
The BLACK three-pin port is provided for programming of the unit. When using the 998T
Bitwriter
®
, it is possible to configure any and all of the programmable functions. For more infor-
mation please refer to the guide packaged with the programmer. This port can also be used to interface
with Directed Video components for on-screen security system programming and trigger information.
Mounting the Receiver/Antenna
Receiver/antenna position should be discussed with the vehicle owner prior to installation, since the
antenna may be visible to the vehicle’s operator.
The best location for the receiver/antenna is centered high on either the front or rear windshield.
For optimal range, the antenna should be mounted vertically. It can be mounted horizontally in
relation to the windshield or under the dashboard away from metal, but range will be diminished.
Metallic window tint can also affect range, so this should be a consideration when determining the
mounting location.
After determining the best mounting location, follow these steps:
1. Clean the mounting area with a quality glass cleaner or alcohol to remove any dirt or residue.
2. Plug the receiver/antenna cable into the receiver/antenna.

12
©
2005
Directed Electronics, Inc. all rights reserved
3. Mount the receiver/antenna using the supplied double-sided tape.
4. Route the receiver/antenna cable to the control module and plug it into the four-pin antenna
connector.
On-Board Dual-Stage Shock Sensor
There is a dual-stage shock sensor inside the control unit. Adjustments are made via the rotary
control as indicated in the diagram. Since the shock sensor does not work well when mounted
firmly to metal, we do not recommend screwing down the control module. The full trigger of the
on-board shock sensor reports Zone 2. (See
Table of Zones section of this guide.)
Note: When adjusting the sensor, it must be in the same mounting location that it will be after the
installation is completed. Adjusting the sensor and then relocating the module requires
readjustment.
IMPORTANT! To achieve the best possible range, DO NOT leave the antenna cable
bundled under the dash. Always extend the cable full length during installation,
regardless of the antenna mounting location.

©
2005 Directed Electronics, Inc. all rights reserved 13
Optional Sensor Harness, 4-pin Connector
The four-pin sensor harness is optional, and is not included with this unit.
RED (+) 12V Constant and BLACK (-) Ground
These wires supply constant (+) 12 volts and ground to the optional sensor.
BLUE/GREEN (-) Multiplex Input
These wires are multiplex inputs. If a (-) input of less than 0.8 seconds is supplied to either wire,
the Warn-Away response will occur. A (-) input of longer than 0.8 seconds to either wire will initiate
the triggered sequence and report Zone 4.
Programming Jumper
Light Flash Jumper
This jumper is used to determine the light flash output. In the (+) position, the on-board relay is
enabled and the unit will output (+)12V on the WHITE wire, H1/2. In the (-) position, the on-
board relay is disabled. The WHITE wire, H1/2, will supply a 200 mA (-) output suitable for
driving factory parking light relays.
NOTE: For parking light circuits that draw 10 amps or more, the jumper must be switched to a (-)
light flash output. P/N 8617 or a standard automotive SPDT relay must be used on the H1/2 light
flash output harness wire.
IMPORTANT! DO NOT connect the H1/2 light flash wire to a negative vehicle light
flash wire before changing the programming jumper to the negative polarity position or
damage to vehicle light circuit may occur.

14
©
2005
Directed Electronics, Inc. all rights reserved
Bypassing Sensor Inputs
There are times when you need to temporarily bypass all sensor inputs to the unit, such as when
remote starting the vehicle. Anytime an auxiliary channel output is used, all inputs are bypassed for
5 seconds. During the 5 second bypass period, ground can be supplied to the H1/6 Blue wire
without triggering the unit. When the 5 second bypass period ends, if the unit sees ground on the
H1/6 Blue wire, all trigger inputs except the door trigger input will remain bypassed until 5 seconds
after ground is removed from the BLUE wire. This can be done using the status output of a Directed
Electronics remote engine starting unit as shown in the following diagram:
System Features Learn Routine
The System Features Learn Routine dictates how the unit operates. Due to the number of steps,
they have been broken up into two menus. It is possible to access and change any of the feature
settings using the Valet/Program switch. However, this process can be greatly simplified by using the
998T Bitwriter
®
. Any of the settings can be changed and then assigned to a particular transmitter,
up to four, a feature called Owner Recognition. Each time that particular transmitter is used to
disarm the system, the assigned feature settings will be recalled. Owner Recognition is only possible
when programming the unit via the 998T Bitwriter
®
.
If the system was previously programmed using the 998T Bitwriter
®
, the learn routine may be
locked. If the siren generates one long chirp when attempting to program the unit, the learn routine
is locked and must be unlocked using the 998T Bitwriter
®
.
1. OOppeennaaddoooorr..(The H1/5 GREEN wire or the H1/7 VIOLET wire must be
connected.)

©
2005 Directed Electronics, Inc. all rights reserved 15
2. IIggnniittiioonn..Turn the ignition on, then back off: (The H1/9 YELLOW wire must
be connected.)
3. SSeelleeccttaaMMeennuu..Press and HOLD the Valet/Program switch: (The
Valet/Program switch must be plugged into the blue port.) After three seconds
the siren will chirp once indicating entry to the Basic Features Menu #1. If this
is the menu you wish to access, release the switch and go on to Step 4. If the
switch is not released, you will jump to the Advanced Features Menu #2 and
the siren will chirp twice. Once you have selected the desired menu, release the
Valet/Program switch and then proceed to Step 4.
4. SSeelleeccttaaFFeeaattuurree..Press and release the Valet/Program switch the number of
times corresponding to the feature you wish to change. For example, to access
the third feature, press and release the switch three times. Then press the switch
once more and HOLD it. The siren will chirp the number of times equal to
the step you have accessed.
5. PPrrooggrraammtthheeFFeeaattuurree..While HOLDING the Valet/Program switch, you can
toggle the feature on and off using the remote transmitter. Pressing
will select the one chirp setting. Pressing will select the two chirp
setting. (See
System Features Menus section of this guide.)
NOTE: The Valet pulse count feature (2-5) and the Channel three timed
output (2-9) have five possible settings each. Pressing will toggle through
all the two-chirp settings.
6. RReelleeaasseetthheeVVaalleett//PPrrooggrraammSSwwiittcchh..
Once a feature is programmed:
➤➤Other features can be programmed within the same menu.
➤➤Another menu can be selected.
➤➤The learn routine can be exited if programming is complete.

16
©
2005
Directed Electronics, Inc. all rights reserved
To access another feature in the same menu:
1. Press and release the Valet/Program switch the number of times necessary to advance from the
feature you just programmed to the next one you want to program.
2. Then press the Valet/Program switch once more and HOLD it.
For example, if you just programmed the third feature in the menu and you would like to program
the seventh feature in the menu, you would press and release the Valet/Program switch four times
and then press it once more and HOLD it. The siren would chirp seven times to confirm access to
the seventh feature.
To select another menu:
1. Press and HOLD the Valet/Program switch.
2. After three seconds, the unit will advance to the next menu and the siren will chirp, indicating
which menu has been accessed.
For instance, if you just programmed some features in Menu #1 (Basic Features) and you wish to
program a feature in Menu #2, you press and HOLD the Valet/Program switch. After three seconds,
the siren chirps twice indicating access to Menu #2.
To exit the learn routine do one of the following:
➤➤Close the open door.
➤➤Turn the ignition on.
➤➤No activity for longer than 15 seconds.
➤➤Press the Valet/Program switch too many times.

©
2005 Directed Electronics, Inc. all rights reserved 17
System Features Menus
Menu #1 - Basic Features
Items in bold text have been programmed to the default setting at the factory.
Menu #2 - Advanced Features
Feature One Chirp Two-Chirp
Number Setting Setting
2-1 Siren Horn honk
2-2 30-second siren duration 60-second siren duration*
2-3 Nuisance Prevention®Circuitry on Nuisance Prevention®Circuitry off
2-4 Progressive door trigger Instant door trigger
2-5 Valet switch input: 1 pulse Valet switch input: 2-5 pulses
2-6 Bypass Notification ON Bypass Notification OFF
2-7 Ignition-controlled domelight ON Ignition-controlled domelight OFF
2-8 Single unlock pulse Double unlock pulse
2-9 Single lock pulse Double lock pulse
2-10 Channel 3: Validity Channel 3: latched/latched, reset
with ignition/30-second timed/
second unlock output*
2-11 Comfort Closure (On) (20 sec.) Comfort Closure (Off)
*Second unlock is only available if Feature 2-8 is programmed to single pulse.
Feature One Chirp Two-Chirp
Number Setting Setting
1-1 Active arming Passive arming
1-2 Chirps ON Chirps OFF
1-3 Ignition controlled door locks ON Ignition controlled door locks OFF
1-4 Active locking only Passive locking
1-5 Panic with ignition on No panic with ignition on
1-6 0.8 second door lock pulses 3.5 second door lock pulses/0.4 sec.
1-7 Forced passive arming ON Forced passive arming OFF
1-8 Automatic Engine Disable ON Automatic Engine Disable OFF
1-9 Armed When Driving (AWD) Vehicle Recovery System (VRS)
1-10 Code Hopping™on Code Hopping™off

18
©
2005
Directed Electronics, Inc. all rights reserved
Feature Descriptions
The features of the system are described below. Features that have additional settings that can be
selected only when programming with the 998T Bitwriter
®
are indicated by the following
icon:
Menu #1 - Basic Features
1-1 ACTIVE/PASSIVE ARMING: When active arming is selected, the system will only arm when
the transmitter is used. When set to passive, the system will arm automatically 30 seconds after the
last door is closed. To alert the consumer of passive arming, the siren will chirp 20 seconds after the
door is closed. This provides the consumer with an audible prior to the system actually arming. At
the 30 second mark, the system will arm but the siren will not chirp.
1-2 CHIRPS ON/OFF: This feature controls the chirps that confirm the arming and disarming of
the system.
1-3 IGNITION CONTROLLED DOOR LOCKS ON/OFF: When turned on, the doors
will lock three seconds after the ignition is turned on and unlock when the ignition is turned
off. The 998T Bitwriter
®
will display separate steps for ignition lock and ignition unlock. They can
be programmed on or off independently.
1-4 ACTIVE/PASSIVE LOCKING: If passive arming is selected in step 1-1, then the system can be
programmed to either lock the doors when passive arming occurs, or only lock the doors when the
system is armed via the transmitter. Active locking means the system will not lock the doors when it
passively arms. Passive locking means that the system will lock the doors when it passively arms.
NNOOTTEE::Remember, when passive arming is selected, the unit will chirp 20 seconds after the last
door is closed. The system does not actually arm or lock the doors until 30 seconds after the door
has been closed.
1-5 PANIC WITH IGNITION ON: This step controls whether or not the Panic Mode is available
with the ignition on. In some states, there are laws prohibiting a siren from sounding in a moving
vehicle. This feature makes the system compliant with these regulations.
1-6 DOOR LOCK PULSE DURATION: Some European vehicles, such as Mercedes-Benz and
Audi, require longer lock and unlock pulses to operate the vacuum pump. Programming the system
to provide 3.5 second pulses, will accommodate the door lock interface in these vehicles. The default
setting is 0.8 second door lock pulses. For some vehicles a 0.4 second pulse duration is required to
prevent the windows from moving.

©
2005 Directed Electronics, Inc. all rights reserved 19
1-7 FORCED PASSIVE ARMING ON/OFF: To use this feature, passive arming must be selected
in step 1-1. When turned on, forced passive arming will ensure that the system will passively arm,
even if a zone is left open or invalid. Forced passive arming occurs one hour after the ignition is
turned off.
1-8 AUTOMATIC ENGINE DISABLE (AED) ON/OFF: AED is a full-time, passive starter
disable that works independently of the security system. When turned on, the orange, ground-
when-armed output (H1/1) will go active 30 seconds after the ignition is turned off. The LED will
flash at half its normal rate when the ignition is turned off to indicate that AED is active and will
interrupt the starter in 30 seconds. AED does not occur in Valet mode and can be bypassed using
the emergency override procedure. The transmitter can also be used to disarm AED.
1-9 ARMED WHILE DRIVING/VEHICLE RECOVERY SYSTEM: In the default setting
(Armed While Driving), the system can be armed with the ignition on. When armed, the ground-
when-armed is not active and the sensors are bypassed. The door triggers will remain active. If
programmed to the Vehicle Recovery System (VRS
®®
) setting, VRS
®®
will be activated.
1-10 CODE-HOPPING™ ON/OFF: The system uses a mathematical formula to change its code
each time the transmitter and receiver communicate. This makes the group of bits or “word” from
the transmitter very long. The longer the word is, the easier it is to block its transmission to the unit.
Disabling the Code-Hopping™ feature lets the receiver ignore the Code-Hopping™ part of the
transmitted word. As a result, the unit may have better range with Code-Hopping™ off.
Menu #2 - Advanced Features
2-1 SIREN/HORN HONK: The system can be programmed to output pulses instead of a
continuous output when the system is triggered. This is useful to honk the factory horn in applica-
tions where a siren is undesirable. Remember that the unit is only capable of supplying 1 amp of
current. A relay will be required to interface with most factory horn systems.
2-2 SIREN DURATION 30/60 SECONDS: It is possible to program the unit to sound for
30 or 60 seconds during the triggered sequence. Some states have laws regulating how long a
security system can sound. When using the 998T Bitwriter
®
, the siren can be programmed to sound
for any length of time ranging from 1 to 180 seconds. Using the SELECT button of the 998T
Bitwriter
®
will adjust the siren duration in one second increments.

20
©
2005
Directed Electronics, Inc. all rights reserved
2-3 NUISANCE PREVENTION
®
CIRCUITRY (NPC) ON/OFF: NPC stops repeated triggering
of the same zone. If one zone is triggered three times in one hour, that zone is bypassed for one hour,
starting from the time of the third trigger. During that hour, if the system detects a trigger on that
zone again, the system resets the one hour timer. If one hour passes and the zone has not triggered
again, the zone is activated and can trigger the system again. NPC monitors sensor inputs and the
door trigger, but does not bypass the ignition trigger at any time. If NPC is turned off, the system
will respond to repeated triggers on the sensor inputs and will do so indefinitely. Some states have
laws regulating how many times a security system can trigger before it is considered a nuisance and
the vehicle is towed away.
2-4 PROGRESSIVE DOOR TRIGGER ON/OFF: The system responds to a door trigger input
with a progressive response. When the door is opened with the system armed, the siren will chirp
10 times prior to the full triggered sequence. The door trigger is still treated as an instant trigger and
closing the door quickly will not prevent a full triggered sequence from occurring. If the progressive
door trigger is programmed off, the full siren output will occur the moment the door is opened.
2-5 VALET PULSE COUNT ONE TO FIVE PULSES: The system can be programmed to count
the number presses of the valet switch before disarming the security system or VRS
®®
. The factory
default setting is one pulse. The unit can be set for two to five pulses using the two-chirp setting to
select the pulse count.
Ghost Switch Option: For added security, the GRAY wire on the two-pin Valet/Program can be
connected to any switch in the vehicle that provides a positive (+) momentary pulse.
2-6 BYPASS NOTIFICATION ON/OFF: When programmed on, any active zone input to the
system during arming will generate a bypass notification chirp. When programmed OFF, no bypass
notification chirps will be generated if any zone is active during arming.
2-7 IGNITION-CONTROLLED DOMELIGHT SUPERVISION ON/OFF: If turned on, the
system will turn on the domelight for 30 seconds when the ignition is turned off. The optional
domelight supervision feature must be installed.
2-8 DOUBLE PULSE UNLOCK ON/OFF: Some vehicles require two pulses on a single wire to
unlock the doors. When the double pulse unlock feature is turned on, the BLUE H2/C wire will
supply two negative pulses instead of a single pulse. At the same time, the GREEN H2/A wire will
supply two positive pulses instead of a single pulse. This makes it possible to directly interface with
double pulse vehicles without any extra parts.