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99 s-10 bcm?

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Member - Posts: 1
Joined: May 15, 2003
Location: United States
Posted: July 29, 2003 at 3:46 PM / IP Logged  

Hi there,

I'm new here and was wondering  if  anyone could  help me  out. Im trying  to install an alarm system in my  99 s-10 (2.2l) I need to know what  is a bcm? and where it  is  located  and  if  anyone has a diagram that can tell me  what wire does what.............Thanks



you can email me   at or if your willing to post that would  help me out as well!

Member - Posts: 22
Joined: June 24, 2003
Location: United States
Posted: July 30, 2003 at 12:19 AM / IP Logged  

< language=>Hope this helps:

|       ITEM      |     WIRE COLOR     |POL|       WIRE LOCATION        |

|              12V|red                 |+  |ignition harness            |
|          STARTER|yellow              |+  |ignition harness            |
|         IGNITION|pink                |+  |ignition harness            |
|  SECOND IGNITION|white               |+  |ignition harness            |
|        ACCESSORY|orange              |+  |ignition harness            |
|       POWER LOCK|lt. blue            |+  |brown plug at BCM *1        |
|     POWER UNLOCK|white               |+  |brown plug at BCM *1        |
|       LOCK MOTOR|gray                |   |drivers kick panel          |
|     UNLOCK MOTOR|tan                 |   |drivers kick panel          |
|    DISARM DEFEAT|tan                 |   |passengers kick panel       |
| PARKING LIGHTS +|brown               |   |lt. blue plug at BCM *1     |
| PARKING LIGHTS -|white *4            |   |lt. blue plug at BCM *1     |
|       HEADLIGHTS|purple/white        |-  |purple plug at BCM *1       |
|     DOOR TRIGGER|*2                  |-  |BCM *1                      |
|FCTRY ALRM DISARM|            |-  |purple plug at BCM *1       |
|       TACHOMETER|white               |   |PCM *3                      |
|       BRAKE WIRE|white               |+  |steering column             |
|     HORN TRIGGER|black               |-  |steering column *5          |


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 BCM is located to the right of the accelerator pedal below the radio. The plugs on the BCM face towards the drivers side.   *2 Use tan for the drivers door located in pin B4 of the purple plug, orange for the passenger door located in pin B2 of the purple plug, must diode isolate these wires.  *3 The PCM is located on the passenger fender. On the 2.2L the wire is in a black 80 pin plug pin 10, and on the 4.3L the wire is in a red 32 pin plug pin 20.  *4 This wire will not test when using the headlight switch. This wire is triggered by the DRL system. To meter the wire, start the car with the parking brake set, when the brake is released this wire will go to ground.  *5 Also found in the brown plug at the BCM on vehicles with a factory alarm.< src="" defer>

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