2002 Maxima Factory Alarm

Hi everyone.  Anyone know where the factory alarm is in the 2002 Maxima?  I've installed some whelen strobes and want to hook them up to either the headlight flash, or horn so they flash when the alarm goes off.

Thanks  - Paul

|       ITEM      |     WIRE COLOR     |POL|       WIRE LOCATION        |
|              12V|green               |+  |ignition harness            |
|          STARTER|BLACK/ red or blk/wht|+  |ignition harness            |
|   SECOND STARTER|BLACK/ blue          |+  |ignition harness            |
|         IGNITION|BLACK/ red (smaller) |+  |ignition harness            |
|        ACCESSORY|RED / yellow          |+  |ignition harness            |
| SECOND ACCESSORY|WHITE/ blue          |+  |ignition harness            |
|       POWER LOCK|ORANGE / black *8     |-  |driver door module          |
|     POWER UNLOCK|ORANGE / blue *8      |-  |driver door module          |
|       LOCK MOTOR|gray                |   |pin 54 at SECU *1           |
|     UNLOCK MOTOR|WHITE/ black         |   |pin 55 at SECU *1           |
|    DISARM DEFEAT|GREEN/ YELLOW        |   |pin 56 at SECU *1           |
| PARKING LIGHTS +|RED / blue            |   |driver kick panel *2        |
| PARKING LIGHTS -|lt. blue            |   |headlight switch            |
|       HEADLIGHTS|grn/yel(L),blu/blk(R|-  |headlight switch *7         |
|     DOOR TRIGGER|*3                  |   |SECU *1                     |
| DOME SUPERVISION|use door trigger    |   |                            |
|  TRUNK/HATCH PIN|purple / YELLOW       |-  |pin 13 at SECU *1           |
|         HOOD PIN|yellow/red          |-  |pin 6 at SECU *1            |
|TRNK/HTCH RELEASE|blue                |*4 |pin 16 at SECU *1           |
|  FCTRY ALARM ARM|arms with lock      |   |                            |
|FCTRY ALRM DISARM|disarms with unlock |   |                            |
|       TACHOMETER|WHITE/ green         |   |instrument cluster *5       |
|      SPEED SENSE|pink/blue           |   |instrument cluster *6       |
|       BRAKE WIRE|RED / green           |+  |brake switch or drivers kick|
|     HORN TRIGGER|GREEN / WHITE         |-  |steering column             |
|           WIPERS|blue(L), blu/blk(H) |-  |steering column             |
|  LF WINDOW UP/DN|blue - green        |A  |drivers window switch       |
|  RF WINDOW UP/DN|blue - green        |A  |RF window switch            |
|  LR WINDOW UP/DN|yellow - red        |A  |drivers kick panel          |
|  RR WINDOW UP/DN|grn/wht - green     |A  |drivers kick panel          |
| SUN RF OPN/CLOSE|not recommended     |   |                            |
|        RADIO 12V|yellow              |+  |at radio                    |
|     RADIO GROUND|                    |   |                            |
|     RADIO SWITCH|purple              |+  |at radio                    |
| RADIO ILLUMINATE|RED / white           |+  |at radio                    |
|    POWER ANTENNA|GREEN / WHITE         |+  |at radio                    |
|       LF SPEAKER|blu/wht - blu/yel   |   |at radio or speaker         |
|       RF SPEAKER|brown - brn/wht     |   |at radio or speaker         |
|       LR SPEAKER|lt. grn - blk/yel   |   |at radio or speaker         |
|       RR SPEAKER|blue - pink         |   |at radio or speaker         |

Notes:
This vehicle has an immobilizer system that needs to be bypassed during remote start operation.  Use DEI part number 555U.  *1 The SECU (Smart Entrance Control Unit) is located to the passengers side of the steering column.  *2 Can also find RED / green or RED / yellow at fuse box.  *3 Find lt. green for the drivers door in pin 1, RED / blue for the passenger front door in pin 2, and RED / white for the rear doors in pin 3.  Use all 3 wires and diode isolate each.    *4 Requires a high-current ground for activation.  *5 Located on the rear of the instrument cluster in the white plug.  Do not start the car with the cluster unplugged.  Can also find the WHITE/ green at the ECM located in the front of the center console on the transmission hump. The wiring is easily reached by removing the panel just to the front of the center console on the passenger side. DO NOT UNPLUG THE ECM.  *6 Located on the rear of the instrument cluster in the 20 pin brown plug.  Do not start the car with the cluster unplugged.  Can also find the wire at the ECM.  *7 These wires are high current negative, must use relays.  *8 Meter these wires while turning the key in the driver door. Unlock requires a double pulse.

If you read that tech sheet, everything takes place at the SECU.  I believe the alarm circuitry is in there as well.

I would simply take the parking light or horn trigger wire, and use it to trigger the strobes as you say.  Use a relay, controlled by the car's ignition wire, to interrupt your connection when the engine is running.  Otherwise, the strobes would also come on whenever you manually blow the horn or turn on the lights.  By using the relay, you'll only allow the horn to activate the strobes if the engine is off.  Let me know if you need to know how to wire it up.

The only other problem, is that when the factory alarm is going off, the horn and parking lights are flashing on and off----your strobe lights might not react quickly enough to keep up.  If this is the case, buy one of those timer relays.  Set it up so that the first blow of the horn or flash of the parking lights will cause the strobes to stay on for a minute or so.  Again, though, use a relay with the igniton wire to interrupt this while the engine is running.

Chris, FYI, I sent you a follow-up e-mail for a how to write up.

Thanks