Service: 954-728-9571
Items: 0 - Total: $0.00
See Cart | Check Out
About Us
What's New
Products
Contact Us
Current Specials!
Ordering Information
Our Terms
Shipping Information
Commando and Your Privacy

Search Again?
Need Installation?
Locate An Installer Near You That's Commando Authorized.
Are You An Installer?
Get Listed In our Commando Installer Database and Receive Installation Leads For Free!

Diagrams
Tech Support Home
Ignition & Starter
Starter Kill (3 Wire Harness)
(Download)
-------------------
Starter Kill (5 Wire Harness)
(Download)
-------------------
2nd Starter Wire Relay
(Download)
-------------------
Isolating Starter and Ignition Wires
(Download)
-------------------
Door Locks
Negative Pulse Door Locks
(Download)
-------------------
Positive Pulse Door Locks

(Download)
-------------------

Reverse Polarity Door Locks
(Download)
-------------------
Vacuum Type Door Locks
(Download)
-------------------
Mercedes Vacuum Door Locks
(Download)
-------------------
Toyota Child Safety Locks
(Download)
-------------------
Dodge Caravan Power Locks (Single Wire)

(Download)
-------------------
Ford Probe Door Locks
(Download)
-------------------
Door Lock Actuators
(Download)
-------------------
Trunk & Dome
Trunk Release Configurations
(Download)
-------------------
Domelight Supervision
(Download)
-------------------
Item Links!
Car Alarms
Car Alarm Combos
Alarm Acessories
Remote Car Starters
Keyless Entry
Motorcycle Alarms
Power Windows
Switch Kits
Tailgate Locks
Power Locks
Backup Alarms
Shaved Door Handles
FREE Vehicle Wiring
Diagrams & Charts
Select Your Make


Vehicle Wiring Details for your
2005-2008 Buick Lacrosse Wiring Diagram
Printer Friendly
Version
Listed below is the vehicle specific wiring diagram for your car alarm, remote starter or keyless entry installation into your 2005-2008 Buick Lacrosse . This information outlines the wires location, color and polarity to help you identify the proper connection spots in the vehicle. Please be sure to test all of your wires with a digital multimeter before making any connections. More information on using a multimeter and testing wires please see our Technical Support Area.

 PART   COLOR  LOCATION
 12 VOLT CONSTANT   RED (+)   @ BATTERY or FUSE BOX
 STARTER  YELLOW (+)  IGNITION SWITCH HARNESS or BCM, C1, Pin 21 See NOTE #2
 STARTER 2  N/A  
 IGNITION 1  PINK (+)  IGNITION SWITCH HARNESS or BCM, C1, Pin 22 See NOTE *1
 IGNITION 2  N/A  
 IGNITION 3  N/A  
 ACCESSORY/HEATER BLOWER 1  BROWN (+)  IGNITION SWITCH HARNESS or BCM, C1 Pin 23 See NOTE #2
 ACCESSORY/HEATER BLOWER 2  N/A  
 KEYSENSE  N/A  
 PARKING LIGHTS ( - )  BROWN/WHITE (-)  @ BCM, C3 Pin 8, See NOTE #2
 PARKING LIGHTS ( + )  BROWN (+)  @ FUSE BOX or PASSENGER KICK PANEL, Harness to REAR of VEHICLE.
 POWER LOCK  RED/BLACK (TYPE B)  @ BCM, C2 Pin 2, See NOTE #2
 POWER UNLOCK  ORANGE/BLACK (TYPE B)  @ BCM, C2 Pin 11, See NOTE #2
 DOOR TRIGGER  See NOTE #3  @ BCM, C2, See NOTE #2
 DOMELIGHT SUPERVISION  GRAY/BLACK (-)  @ BCM, C1 Pin 43, See NOTE #2
 TRUNK RELEASE  LIGHT BLUE (+)  @ BCM, C2, Pin 45, See NOTE #2
 SLIDING POWER DOOR  N/A  
 HORN  BLACK (-)  @ BCM, C1 Pin 4, See NOTE #2
 TACH  ANY wire NOT PINK or WHITE (AC)  @ ANY FUEL-INJECTOR
 WAIT TO START LIGHT  N/A  
 BRAKE  WHITE (+)  @ BCM, C2 Pin 30, See NOTE #2
 FACTORY ALARM DISARM   PURPLE (-)  @ BCM, C2 Pin 24, See NOTE #2
 ANTI-THEFT  GM'S TRANSPONDER ANTI-THEFT SYSTEM, See NOTE #1  @ IGNITION SWITCH TUMBLER
 EXTRA INFORMATION
 NOTE #1: This vehicle is equipped with GM's TRANSPONDER ANTI-THEFT System and will require part #791 BYPASS MODULE and an extra ignition key for Remote Starter Operation. To order go to the SECURITY BYPASS MODULE Page on this website. NOTE #2: the BCM is located to the LEFT of the STEERING COLUMN, C1 is a BLACK 52-Pin plug, C2 is a BLACK 52-Pin plug, and C3 is a BLACK 18-Pin plug. NOTE #3: the DRIVERS DOOR is a GREY/BLACK (-) Pin 26, the PASSENGER DOOR is a BLACK/WHITE (-) Pin 17, the DRIVERS REAR DOOR is a BLUE/BLACK (-) Pin 7 and the PASSENGER REAR DOOR is a LIGHT GREEN/BLACK (-) Pin 5 when connecting to an Alarm System use all 4 wires and DIODE ISOLATE, See DAIGRAM
 
Shop By Category!
Security Systems
Keyless Entry
Remote Starters
Power Door Locks
Power Windows
Shaved Door Handles
SPAL Cooling Fans
Solenoids & Actuators
Alarm Sensors
Installation Accessories
Keyword Search
 
Go Search!
Precision Search
Brand Search
View Details... Astra 777 2 Way Car Alarm w/ LCD Pager and Keyless Entry w/ Relay Pack
$99.95

View Details... Avatal 3001L OEM security upgrade
$93.98

View Details... Commando 357 Car Alarm
$45.00

View Details... Car Alarms w/ LCD 2 Way Pager and Keyless Entry
$89.95

View Details... 2 Door Power Lock Kit with G20 Keyless Entry and Alarm
$89.99

View Details... G20-PAC Car Alarm, Keyless Entry w/relay pack
$59.99

View Details... CrimeStopper RS4 Remote Start and Full Keyless Entry System
$123.99

View Details... Commando DL-100 Car Alarm, Keyless Entry Upgrade
$59.00

View Details... CrimeStoppers - RS1 1-way Remote Starter and full keyless Entry System
$74.99

View Details... Baretta 2 Way LCD Pager/ Car Alarm Keyless Entry
$99.99