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FEBERARY/06/2006 

METHOD 1 

 

+ 12 V 

Ignition Key In Sensor 
Switch Closes with Key 
In Ignition Cylinder 

Drivers Door Pin Switch 

87a

86

30

87 

85 

Key In     
Chime Module

Connected to (-) Negative 
Safety Input Wire   

White/ Black

   

To Hood Pin Switch   
Safety Shut Down   

1N4003

 

To connect to the key in sensor as shown in method 1: 
A.  Locate the control wire that connects the drivers door pin switch to the key in sensor switch. 
B.  Cut this wire and connect the ignition cylinder side to chassis ground. 
C.  Locate the key in sensor switch wire that connects the chime module to the ignition cylinder. 
D.  Cut this wire and connect the ignition cylinder side to terminal 30 of a P&B VF45F11 or equivalent relay. 
E.  Connect the cathode (striped) side of a 4003 series diode to this same wire, and connect the (non 

striped) side to the negative safely input wire (WHITE/ BLACK) of the Remote Start Unit. 

F.  Connect terminal 86 of the relay to a fused + 12 volt constant battery source. 
G.  Connect terminal 87 of the relay to the Chime Module side of the previously cut wire in step D. 
H.  Connect terminal 85 of the relay to the Drivers Door side of the pin switch wire previously cut in step B. 

Note: 

A second 4003 series diode may be required to maintain the integrity of the hood open, shut down 

circuit.    If this is the case, it must be installed as shown in the diagram above. The anode (Non Stripped) 
side must be connected to the WHITE/ BLACK wire of the Remote Start Unit. The cathode (Striped) side 
must be connected to the hood pin switch. If the hood pin switch is also used for an alarm trigger input, be 
certain to use the dual diode assembly packaged with the Remote Start Unit as shown in this installation 
guide.  

METHOD 2 

 

Ignition Key In Sensor 
Switch Closes with Key 
In Ignition Cylinder 

Connected to (-) Negative 
Safety Input Wire   

White/ Black

   

To Hood Pin Switch   
Safety Shut Down   

1N4003 

 

To connect to the key in sensor circuit as shown for method 2: 
A.  Locate the control wire that connects the drivers door pin switch to the key in sensor switch. 
B.  Cut this wire and connect the ignition cylinder side to chassis ground. 
C.  Locate the key in sensor switch wire that connects the chime module to the ignition cylinder. 
D.  Cut this wire and connect the ignition cylinder side to the Remote Start Negative Safety Shut down wire 

WHITE/ BLACK, using a 4003 series diode as shown above. 

Note: 

A second 4003 series diode may be required to maintain the integrity of the hood open, shut down 

circuit.    If this is the case, it must be installed as shown in the diagram above. The anode (Non Striped) side 
must be connected to the WHITE/ BLACK wire of the Remote Start Unit. The cathode (Striped) side must be 
connected to the hood pin switch. If the hood pin switch is also used for an alarm trigger input, be certain to 
use the dual diode assembly packaged with the Remote Start Unit as shown in this installation guide.   
AFTER THE CONNECTION OF THE NEUTRAL START SAFETY WIRE AS INDICATED IN ANY OF THE 
PREVIUOS ALTERNATE CONFIGURATINS, THIS CIRCUIT MUST BE TESTED FOR OPERATION. 
Retest by following the steps outlined in the NEUTRAL START SAFETY TEST shown in this manual. 

VS3725IN 

16

Summary of Contents for VS 3725

Page 1: ...FEBERARY 06 2006 VS 3725 2 WAY LCD PAGER ALARM WITH REMOTE ENGINE STARTER Installation Manual MEGATRONIX VAN NUYS CA U S A VS3725IN 1...

Page 2: ...gardless of the type of vehicle Read operation manual for operating and programming routine Do not install any component near the brake gas pedal or steering linkage Some vehicles have a factory insta...

Page 3: ...rown ACC Heater Output ORANGE 200mA Ground Output When Armed Blue Instant Trigger Ground Input Green Negative Door Trigger Input Violet Positive Door Trigger Input 3A Fuse 10A Fuse 3 White Parking Lig...

Page 4: ...t sharp edges that may damage wires and causes short circuit CAUTION Do not connect the wire harness to the control module until all wiring to vehicle is complete 6 PIN HEAVY GAUGE WIRING CONNECTIONS...

Page 5: ...e BROWN wire to the accessory wire in the vehicle that powers the climate control system An accessory wire will show 12 volts when the ignition switch is turned to the ACCESSORY or ON and RUN position...

Page 6: ...vehicles utilize a metallic shielded window glass that will inhibit or restrict RF reception In these vehicles route the two ways transceiver antenna module away from metallic shielded window glass as...

Page 7: ...ches ground to the brake lights An isolation diode must be used for ground switched brake light circuits and must be connected to the output of the brake switch VS3725IN 7 To White Black Wire Negative...

Page 8: ...Locate the pair of VATS wires in the vehicle usually a pair of thin gauge wires running from the ignition switch to the VATS control module 3 Connect the YELLOW wire from Remote Start Unit to TERMINAL...

Page 9: ...re is 200 mA This feature allows you to remote control trunk release or other electric device Pink wire 200mA Programmable Output See Alarm Feature 8 Programming 2 Steps Unlock Output Factory default...

Page 10: ...ut Compressor Door Switch 30 86 87a 85 87 30 86 87a 85 87 3 Pin Plug To Alarm 2 STEP DOOR UNLOCK WIRE CONNECTION FOR 5 WIRE ALTERNATING DOOR LOCKS 12V Cut the Existing Lock Wire Cut Existing Unlock X...

Page 11: ...tter until the siren responds with a confirming chirp indicating the signal has been stored into memory 4 If you have additional transmitters up to 4 that need to be programmed repeat step 3 for each...

Page 12: ...t will reset or stop when the ignition is turned on Ground Output During Start Crank This wire will provide a 200mA ground output while the starter output of the remote start unit is active This outpu...

Page 13: ...es Door lock before start Door lock after shut down Door lock before start and Door lock after shut down Without this feature Nine times White Blue Wire 1 pulse activate White Blue Wire 2 pulse activa...

Page 14: ...2 Move the Enable Toggle Switch to ON position If installed 3 Move the gear selector to Park NEUTRAL position 4 Check Black White wire connection 3 No RPM Engine Checking TACH or Check White Red wire...

Page 15: ...ral Safety Switch wire to this reference wire NOTE If the optional remote starts enable toggle switch is installed connect the one side the enable switch to this reference wire and connect the other s...

Page 16: ...e connected to the hood pin switch If the hood pin switch is also used for an alarm trigger input be certain to use the dual diode assembly packaged with the Remote Start Unit as shown in this install...

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