Interfacing a Factory alarm

do you have to interfface the factory alarm with the newone. im doing a 2000 infity g20 with a remote start and stuff. now i read somewhere thatif u take the door lock/uunlock  wires and diode them form the factory ar,/disarm wires thatinterfaces it

. is that all i have to do?is it that easy?

whats the advatages and disadvantages of interfacing it and not?

thanks

what happens if i dont interface

please help

You don't use any diodes.

Using the proper wire to lock the door will also arm the factory alarm.

Sending a double pulse to the unlock wire will unlock all the doors.

Sending a single pulse to the unlock wire will disarm the alarm so you can remote start the car.

I am pretty sure that these wires are tested by twisting the key in the driver's door key cylinder.

You asked what would happen if you didn't do any of this..... well, I guess you could not hook up the lock/unlock funtions from your remote start, but then you'd have to carry two remotes with you all the time, which would be stupid.

Also, locking the car doors with the key, or with the remote, or by pressing the "power lock" button with the door open.......any of these things will arm the factory alarm, and it will sound off next time you try to remote start the car.  You could, every night when you get home, just lock each door manually with your finger......but why would you want to have to do that?  And then the car would be unprotected too.

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          YEAR: 2000  MAKE: Infiniti  MODEL: G20  STYLE: |       ITEM          |     WIRE COLOR      |POL |       WIRE LOCATION        |
|                 12V |white                | +  |ignition harness            |
|             STARTER |BLACK/ white          | +  |ignition harness            |
|      SECOND STARTER |WHITE/ green          | +  |ignition harness            |
|            IGNITION |WHITE/ red            | +  |ignition harness            |
|     SECOND IGNITION |WHITE/ purple         | +  |ignition harness            |
|           ACCESSORY |WHITE/ blue           | +  |ignition harness            |
|          POWER LOCK |yellow               | -  |SECU *1                     |
|        POWER UNLOCK |lt. GREEN/ red *2     | -  |SECU *1                     |
|          LOCK MOTOR |gray                 |    |SECU *1                     |
|        UNLOCK MOTOR |pink                 |    |SECU *1                     |
|       DISARM DEFEAT |blue                 |    |SECU *1                     |
|    PARKING LIGHTS + |RED / blue             |    |steering column             |
|          HEADLIGHTS |RED / yel & pnk/blu    | +  |steering column             |
|        DOOR TRIGGER |*3                   | -  |SECU *1                     |
|    DOME SUPERVISION |use door trigger     |    |                            |
|     TRUNK/HATCH PIN |red                  | -  |SECU *1                     |
|            HOOD PIN |yellow/black         | -  |SECU *1                     |
|   FACTORY ALARM ARM |arms w/ lock         |    |                            |
|FACTORY ALARM DISARM |disarms w/ unlock    |    |                            |
|    DISARM NO UNLOCK |*4                   |    |                            |
|          TACHOMETER |blue or blu/orn      |    |*5                          |
|         SPEED SENSE |YELLOW /GREEN         |    |in front of the shifter *6  |
|          BRAKE WIRE |RED / green            | +  |brake switch                |
|        HORN TRIGGER |GREEN / WHITE          | -  |steering column             |
|              WIPERS |grn/red & grn/blk    | -  |steering column             |
|   LF WINDOW UP/DOWN |blue - green         | A  |drivers window switch       |
|   RF WINDOW UP/DOWN |RED / wht - RED / blk    | A  |drivers door harness        |
|   LR WINDOW UP/DOWN |yel/red - yel/blk    | A  |drivers door harness        |
|   RR WINDOW UP/DOWN |grn/wht - grn/blk    | A  |drivers door harness        |
| SUN ROOF OPEN/CLOSE |red - blue           | C  |sun roof motor              |
|           RADIO 12V |RED / green            | +  |radio                       |
|        RADIO SWITCH |grn/wht              | +  |radio                       |
|    RADIO ILLUMINATE |blue                 | +  |radio                       |
|       POWER ANTENNA |red                  | +  |radio                       |
|          LF SPEAKER |                     |    |                            |
|          RF SPEAKER |                     |    |                            |
|          LR SPEAKER |                     |    |                            |
|          RR SPEAKER |                     |    |                            |NOTES:NOTE: Some models may have an immobilizer system that needs to be bypassedduring remote start.  Use DEI module 555U to bypass.*1 The SECU (Smart Entrance Control Unit) is located to the left of thesteering column.*2 Requires a double pulse for unlock.*3 Find RED / white for drivers door and RED / blue for the passengers door.  Use both wires and diode isolate each.*4 Use the unlock wire with a single pulse to disarm without unlocking.*5 Locate the tach wire at the ECM in the center console or in a white18-pin connecter located just in front of the shifter.  The plugs for theECM are accessed from the passengers side of the center console.  *6 Located in a white 18-pin connector.    (c) 1994-2002 Directed Electronics, Inc. All Rights ReservedIMPORTANT: This wiring information is being provided free of charge on an "AS IS" basis, without any representation or warranty.  It is your responsibility to verify any circuit before interfacing with it using a digital multimeter. Directed Electronics, Inc. assumes no responsibility with regards to the accuracy or currency of this information.  Proper installation in every case is and remains the responsibility of the installer.  DEI assumes no liability or responsibility resulting from an improper installation, even in reliance upon this information.