
INSTALLATION INSTRUCTIONS
Power Harness
First Socket (-) Domelight control output
Second Socket (+) 12 volts for the relay
Vacant Sockets
Main Harness
+12 Volts for Relay (when needed)
(-) Channel #2 Output
Model: 7921P
Step 1: 10-Pin Main Harness Installation
The main wire harness contains 8 wires which all have a specific purpose.
Follow the wiring recommendations enclosed for each wire. Wires not used
should be released from the harness connector or taped off to prevent accidental
shorting.
Gray Wire: The gray wire is a pulsed ground output designed to activate the
vehicle’s existing car horn system in place of or in addition to a siren
sounding device. Connect the gray wire to the negative trigger wire on the
vehicle’s horn relay.
WARNING! Maximum output of this wire is 300mA. Horn systems requiring
positive voltage or more than 300mA to trigger the horn relay will require an
additional relay to increase current capabilities.
Blue Wire with White Stripe: This wire provides a single pulsed ground when
the 7921P is disarmed so that it will disarm a factory installed alarm system.
Note: Some factory alarms systems may require a double pulse signal to
disarm the factory alarm system. In this case, you will need to add Silencer
adapter model #5902DP to the blue wire with white stripe.
Brown Wire: The brown wire is the positive siren output wire. Connect the
brown wire from the harness to the brown wire on the siren supplied. Ground
the remaining black wire from the siren.
Blue Wire: The blue wire is a negative trigger input that can be used for existing
or newly installed grounding type hood/trunk/ hatch pin switches. The blue
wire can also be used as an input for additional ground output electronic
sensors.
Green Wire: The green wire is the negative (-) door trigger input. If the vehicle
you are working on has a negative (-) triggered dome light system, connect
the green wire to the common dome light trigger wire. This wire is usually
located at the driver’s side door jamb switch.
Violet Wire: The violet wire is the positive (+) door trigger input. If the vehicle
you are working on has a positive (+) triggered dome light system, connect
the violet wire to the common dome light trigger wire. This wire is usually
located at the driver’s side door jamb switch.
Red Wire with White Stripe: The red/white wire is the output of the parking light
relay. Connect the red/white wire to the parking light trigger wire coming from
the headlight switch. Do not connect the red/white wire to a dashboard
lighting wire. Connecting the red/white into dashboard lighting can damage
the dashboard lighting dimmer switch.
Pink Wire: The pink wire is the input wire to the parking light relay. The
connection of the pink wire determines the output polarity of the parking light
relay. If the parking light system you are connecting to is positive activation,
connect the pink wire to battery +12vdc. If the parking light system you are
connecting to is negative activation, connect the pink wire the the frame of
the vehicle.
Note: (Applies to All Models) The main 10 pin harness contains two vacant
sockets. These vacant sockets are for channel #2 output. All the alarm
modules require an 5912 for channel #2 operation. Follow the wiring
instructions supplied with 5912. If a 5912 relay is not available, a standard
Bosch 5 pin relay can be used.
For Technical Assistance Call:
(800) 638-3600
Step 3: 5-Pin Power Harness Installation
The power harness contains 3 wires and two vacant sockets, this power harness
does not come packaged with the alarm module but in 5901H1, 5901H2,
5901H3 harness kits or custom starter disable/power interface harnesses.
Packaged with the 10-pin main harness are two loose wires (an Orange wire and
a White wire with a Black stripe). Follow the wiring recommendations enclosed
for each wire.
Orange Wire: Insert the orange wire into the first socket of the power harness.
The orange wire is the dome light supervision control output. Connect the
orange wire to the required control relay.
White Wire with Black Stripe: Insert the white/black wire into the third socket of
the power harness. (As shown) The white/black wire is the (-) Channel #2
output wire and should be connected to an existing (-) activated trunk
release switch or an additional relay will have to be added to control the
trunk release mechanism.
Step 4:Door Lock/Unlock Socket (3- Pin Black Socket)
For remote controlled door lock/unlock operation, follow the wiring diagram
enclosed (page 2). The harness is an optional part not supplied with 7921P.
Order part # 5902 or 5903 for one-wire multiplexing door locking systems.
Step 5: Auxiliary Interrupt Wiring (2-Pin Orange Socket)
To interrupt an additional circuit(s), all alarm modules require either the ALARPS, ALA-RPS2 or ALA-RPS3 relay pack. Follow the wiring instructions
supplied with the relay packs.
Step 6: Dip Switch Feature Programming
Dip Switch #1:
must be connected and the door lock output feature must be “On” in the
dealer mode)
Note: This feature can be programmed using the #1 Dip Switch in both the
dealer and consumer modes.
Place Dip Switch #1 to the “On” position to activate this feature.
Place Dip Switch #1 in the “Off” position to deactivate this feature.
Dip Switch #2: Current Sensing
Note: This feature can be programmed using the #2 Dip Switch in both the
dealer and consumer modes.
Place Dip Switch #2 to the “On” position to have the current sensing feature on.
Place Dip Switch #2 in the “Off” position to have the current sensing feature off.
Dip Switch #3: Door Entry Delay
Note:
Switch. The feature will not be functional in the dealer mode but will become
functional when the unit is converted to customer mode.
Place the dip switch in the "On" position. During customer mode operation,
the (+) or (-) door input trigger wires will have a 20 second entry delay. This
is primarily used for Ford vehicles that have keyless entry and use a door
mounted keypad.
Place the dip switch in the "Off" position (Factory Default) and the 20 second
door entry delay will be off (Instant Activation).
Step 7: Additional Menu Programming
The Silencer model 7921P control module offers additional menu programmable
features. Follow the dealer or consumer remote feature programming sheets to
adjust the 7921P features.
Ignition Key Controlled Lock/Unlock (Door lock control function
This feature can be pre-programmed in dealer mode using the #3 Dip
Step 2: Arm / Disarm Harness Wiring (3-Pin White Socket)
Follow wiring diagram enclosed for proper connection to the factory installed
power door locking system to arm and disarm the 7921P security system.
1111 West Victoria Street
Compton, CA 90220 www.magnadyne.com
© 2005 Copyright Magnadyne Corp.
Proposed

5-Pin Power
Harness*
7921P
Controller
Shock Sensor
(White 4-Pin Socket****)
Programmable Key Receptacle
for Changing to
Customer Mode
or
Putting Unit to Sleep Mode
* Supplied with 5901H1, 5901H2 or 5901H3 Harness Kits or
Custom Starter/Disable T-harness.
** Supplied with 5902 Ignition Controlled Locking Kit.
*** Supplied with ALA-RPS, ALA-RPS2 or ALA-RPS3 relay packs.
**** For a Single-Zone Shock Sensor use ALA930.
For a Dual-Zone Shock Sensor use ALA95 or ALA90.
***** This wire supplies +12V power, if not used cut this wire
off at connector to prevent shorting.
Pink Wire Parking Lights Relay Input
Red/White Wire Parking Lights Relay Output
Violet Wire Positive Door Trigger Input
White/Black Wire Channel #2 Output
Green Wire Negative Door Trigger Input
Blue Wire Negative Pin Trigger Input
Brown Wire
Positive (+) Output for
an Optional Electronic Siren
Blue/White Wire (-) Signal Output to
Disarm Factory Alarm
Gray Wire Horn (-) Pulsed Output
Starter Disable
Socket*
Driver's Door
Lock
Unlock
Factory Keyless
Module
(Typical)
Left Door
Lock/Unlock Switch
Lock
Unlock
Right Door
Lock/Unlock Switch
Left Door
Jamb
Right Door
Jamb
Lock (+)
Unlock (+)
Lock (+)
Unlock (+)
Right Front
Pass. Door
Left Rear
Pass. Door
Lock (+)
Unlock (+)
Right Rear
Pass. Door
Lock (+)
Unlock (+)
B
C
A
C
A
C
A
A
= Possible Connection Points for Green Wire
B = Connection Point for Blue Wire
C = Possible Connection Points for White Wire
Inside Door Inside DoorInside Vehicle
Green Wire
White Wire
Blue Wire
Black Wire (Unlock)
Red Wire (Lock)
Orange Wire ***** 2nd Unlock Output (requires
additional relay & special wiring).
Optional
5902 Harness
Auxiliary Interrupt
(Orange 2-Pin Socket***)
Programmable Key
(Green 2-Pin Socket)
Ignition Locking**
(Black 3-Pin Socket)
LED
(White 2-Pin
Socket)
Valet Switch
(Blue 2-Pin Socket)
Arm/Disarm Harness
(White 3-Pin Socket)
DIP Switches
INSTALLATION INSTRUCTIONS Model: 7921P
© 2005 Copyright Magnadyne Corp.
Proposed

Models: 7921P, 7920P, 7919P Rev. C
CONSUMER REMOTE FEATURE PROGRAMMING
NOTE: The alarm must be in “consumer mode” before you can program
consumer mode features. See additional instruction sheets on performing this
function. When the
operating features are reset to their default settings. These default settings can be
changed by following the enclosed procedures and using the special 7910P
programming transmitter.
# Programmable Alarm Feature Default Setting
(Consumer Transmitter Mode) (Consumer Transmitter Mode)
1
Chirp Status Indicator Chirps On
2A *Mode “P” Automatic Arming of Alarm “On”, Automatic Arming of Starter Disable “On”
2B *Mode “S”
3 Remote Panic from Factory Keyless Entry Transmitter On
4 Safety Illumination Sentinel System Off
* During Dealer Remote Feature Programming either the ”P” or “S” mode was selected. In the Consumer Remote Feature Programming mode you cannot change the mode (either
“S” or “P”) that was selected in the Dealer Feature Programming. You can change the features of the mode that was selected in the Dealer Mode. (See Step 5 for more details.) To
change mode “S” or “P” operation you have to recode a dealer transmitter to the unit and change the operation in the “Dealer Remote Programmable Feature” Mode.
Insert the Valet Switch
Dealer Switch
(Red Button)
Momentary Switch
Push On/ Off
alarm
is programmed to consumer mode, a specific group of
Step 1 Step 3
Consumer Switch
(Black Button)
Toggle Switch
Push Once = On
Push Again = Off
Step 2
Disarm Security
System
The LED will be off and
the horn/siren will emit 2
chirps.
Step 5
5910P Programming Transmitter
Blue
Button
Black
Button
# Button Color Function Confirmation = Change Function
1
Black Chirp Status Indication 1 Beep = Chirp Status Indication “On”
2A Blue Mode “P”
2B
Blue
3
Red
4
Black + Blue Safety Illumination Sentinel System 3 Beeps = Safety Illumination Sentinel System “On”
Red
Button
Note: The auto arm door locking feature has
a default setting of "off" in customer mode.
To turn on or off the auto arm door locking
feature in customer mode, repeat the steps
for the "Blue" button and hold the transmitter
button down for more than 3 seconds to get
a second confirmation chirp. For example: (1
chirp = 10 sec auto arm on, auto door lock
off.) (1 chirp + 1 chirp = 10 sec auto arm on,
auto door lock on.)
Mode “S” 1 Beep = Automatic Arming of Alarm “On”, Automatic Arming of Starter Disable “On”
Remote Panic from Factory Keyless
Entry Transmitter
Use the 5910P transmitter and the chart below to
change the features as required. Press and hold
the button that controls the function you want to
change and listen for the chirp confirmation. You
can repeatedly press the same colored button
and turn the same function on and off as many
times as required until the operation is correct.
After all functions have been re-programmed to
operate as required go to step 6.
2 Beeps = Chirp Status Indication “Off”
1 Beep = Automatic Arming of Alarm “On”, Automatic Arming of Starter Disable “On”
2 Beeps = Automatic Arming of Alarm “On”, Automatic Arming of Starter Disable “On”
3 Beeps = Automatic Arming of Alarm “On”, Automatic Arming of Starter Disable “On”
4 Beeps = Automatic Arming of Alarm “Off”, Automatic Arming of Starter Disable “On”
5 Beeps = Automatic Arming of Alarm “Off”, Automatic Arming of Starter Disable “Off”
2 Beeps = Automatic Arming of Alarm “Off”, Automatic Arming of Starter Disable “On”
1 Beep = Panic “On”
2 Beeps = Panic “Off”
4 Beeps = Safety Illumination Sentinel System “Off
Both will arm 10 seconds after last door is closed or rearm 10 seconds after remote disarm.
Both will arm 20 seconds after last door is closed or rearm 20 seconds after remote disarm.
Both will arm 45 seconds after last door is closed or rearm 60 seconds after remote disarm.
The starter will disable 70 seconds after last door is closed.
Both will arm 45 seconds after last door is closed.
The starter will disable 70 seconds after last door is closed.
NOTE: In the event that the 7910P transmitter is unavailable, the programming
can also be performed by the consumer transmitter once all buttons have been
programmed into the control module memory. (See “Consumer Remote Feature
Programming from the Consumer's Transmitter.) To get into the “Consumer
Remote Feature Programming” mode follow the procedures below”.
Automatic Arming of Alarm “Off”, Automatic Arming of Starter Disable “On”
Starter Disable will Arm 70 Seconds After Last Door is Closed
Step 4
Turn On Ignition
The LED will remain off.
Push the Valet Switch:
6 Times if Using a Red Button Switch
12 Times if Using a Black Button Switch
The LED will be on solid and the horn/siren will emit 1 long
then 1 short chirp. You are now in the “Consumer Remote
Feature Programming” mode.
(Represents 6 Times On/ Off)
Step 6
Turn Off the Ignition
The horn/siren will emit 1 short chirp and 1 long chirp. You are
now out of the “Consumer Remote Feature Programming”
mode.
1111 West Victoria Street
Compton, CA 90220 www.magnadyne.com
© 2005 Copyright Magnadyne Corp.
Proposed