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2002 monte carlo alarm door trigger false trips

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Member - Posts: 15
Member spacespace
Joined: February 02, 2003
Location: United States
Posted: February 02, 2003 at 10:52 AM / IP Logged  
i installed an alarm remote start combo in a 2002 monte carlo and the it wont stop false triggering on the doors. the domelight does not come on but there is just enough ground on the wire to trigger after about ten minutes or so. i wired directly to the domelight below the driver side dash that lights the floor area. is there a better place to tap the signal? why wont this work?
Copper - Posts: 150
Copper spacespace
Joined: April 24, 2002
Location: Michigan, United States
Posted: February 02, 2003 at 6:08 PM / IP Logged  

       ITEM      |     WIRE COLOR     |POL|       WIRE LOCATION        |

|              12V|red                 |+  |ignition harness *1         |
|          STARTER|yellow              |+  |ignition harness *1         |
|         IGNITION|pink                |+  |ignition harness *1         |
|  SECOND IGNITION|green               |+  |ignition harness *1         |
|        ACCESSORY|orange              |+  |ignition harness *1         |
| SECOND ACCESSORY|brown *7            |+  |ignition harness *1         |
|       POWER LOCK|ORANGE / black        |*2 |gray 24-pin plug @ BCM *3   |
|     POWER UNLOCK|same wire as lock   |-  |gray 24-pin plug @ BCM *3   |
|       LOCK MOTOR|*4                  |   |                            |
|     UNLOCK MOTOR|*4                  |   |                            |
|    DISARM DEFEAT|*4                  |   |                            |
| PARKING LIGHTS +|do NOT use          |   |                            |
| PARKING LIGHTS -|white *8            |   |pink 24-pin plug @ BCM *3   |
|       HEADLIGHTS|yellow              |-  |gray 24-pin plug @ BCM *3   |
|     DOOR TRIGGER|*5                  |-  |gray 16-pin plug @ BCM *3   |
| DOME SUPERVISION|use door trigger    |   |                            |
|  TRUNK/HATCH PIN|RED / black           |-  |gray 24-pin plug @ BCM *3   |
|TRNK/HTCH RELEASE|black               |-  |release switch              |
|FCTRY ALRM DISARM|lt green            |-  |gray 16-pin plug @ BCM *3   |
|       TACHOMETER|white               |   |ignition coil               |
|      SPEED SENSE|green               |   |gray 16-pin plug @ BCM *3   |
|       BRAKE WIRE|white               |+  |brake switch                |
|     HORN TRIGGER|black *6            |-  |steering column             |
|           WIPERS|                    |   |                            |
|  LF WINDOW UP/DN|blue - brown        |A  |drivers window switch       |
|  RF WINDOW UP/DN|lt. blu - tan       |A  |drivers door harness        |
|  LR WINDOW UP/DN|green - purple      |A  |drivers door harness        |
|  RR WINDOW UP/DN|lt. grn - purple    |A  |drivers door harness        |
| SUN RF OPN/CLOSE|                    |   |                            |
|   SUN ROOF LIMIT|                    |   |                            |


NOTE: This vehicle has the passlock II immobilizer system that, when adding a remote start, must be interfaced with. Use DEI part 555t or 555L.  *1 The ignition harness is located far right of the steering column, behind the ignition switch.  *2 Lock and unlock use the same wire. Lock requires a negative trigger with a 470 ohm resistor in-line. Unlock is negative trigger. Must use relays.    *3 The BCM is located above the brake pedal. It is a plastic box with three plugs that face the firewall.  *4 Installation of factory keyless upgrade alarm is not recommended on this vehicle because the door lock motor wires rest at approximately 7 volts.  *5 The drivers door trigger wire is blue. Blue/white will catch the passenger door. Use both wires and diode isolate each.  *6 Horn can also be found at the black plug with a blue insert above the gas pedal.  *7 This wire must be powered as an accessory wire. If powered as an 2nd ignition the car will not crank.  *8 Must isolate this wire from the BCM when doing remote start to avoid 'service engine soon' light. See directfax document #1600 for wiring information.

Velocity Motors 
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Joined: March 08, 2002
Location: Manitoba, Canada
Posted: February 02, 2003 at 6:51 PM / IP Logged  
You need to relay or diode isolate the door triggers from each other. Use the wires listed above for reference.
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Chris Luongo 
Platinum - Posts: 3,746
Platinum spaceThis member consistently provides reliable informationspace
Joined: May 21, 2002
Location: Massachusetts, United States
Posted: February 22, 2003 at 1:07 PM / IP Logged  
When the BCM goes to sleep after 20 minutes, it takes away the 12-volt side of the domelight wire, and it turns to a ground, making a false alarm. You can use the domelight wiring for a door trigger.
The blue and blue/white wires listed in techsoft are the correct ones to use. They're available in a harness coming out of the driver's side fusebox; this is easier than bending and stooping to get to the BCM.

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Disclaimer: *All information on this site ( ) is provided "as is" without any warranty of any kind, either expressed or implied, including but not limited to fitness for a particular use. Any user assumes the entire risk as to the accuracy and use of this information. Please verify all wire colors and diagrams before applying any information.

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