2008 Volvo XC90 Car Security Wiring Chart
Battery Constant 12v+ Positive Wire (+): Red/Black
Battery Constant 12v+ Positive Wire Location: Ignition Switch Harness
Starter Positive Wire (+): Yellow/White
Starter Positive Wire Location: Ignition Switch Harness
Second Starter Positive Wire (+): N/A
Second Starter Positive Wire Location: N/A
Ignition Positive Wire (+): Blue/Red
Ignition Positive Wire Location: Ignition Switch Harness
Second Ignition Positive Wire (+): N/A
Second Ignition Positive Wire Location: N/A
Third Ignition Positive Wire (+): N/A
Third Ignition Positive Wire Location: N/A
Accessory Positive Wire (+): Blue
Accessory Positive Wire Location: Ignition Switch Harness
Second Accessory Positive Wire (+): Violet
Second Accessory Positive Wire Location: Ignition Switch Harness
Key Sense Wire: Yellow
Key Sense Wire Location: Ignition Switch Harness
Parking Light Negative Wire (-): N/A
Parking Light Negative Wire Location: N/A
Parking Light Positive Wire (+): White and Gray
Parking Light Positive Wire Location: Ignition Switch Harness
Power Door Lock Negative Wire (-): Violet/White
Power Door Lock Negative Wire Location: At Driver Door Module
Power Door Unlock Negative Wire (-): Blue/White
Power Door Unlock Negative Wire Location: At Driver Door Module
Door Trigger Negative Wire (-): White
Door Trigger Negative Wire Location: At Any Courtesy Light
Dome Light Supervision Wire (-): WHite
Dome Light Supervision Wire Location: At Courtesy Light Under the Dash
Trunk Trigger Negative Wire (-): Pink
Trunk Trigger Negative Wire Location: At REM Module Behind the Left Rear Trim Panel in Cargo Area
Trunk Release Negative Wire (-): N/A
Trunk Release Negative Wire Location: N/A
Sliding Power Door Wire: N/A
Sliding Power Door Wire Location: N/A
Horn Negative Wire (-): Red/Black
Horn Negative Wire Location: At REM Module Behind the Left Rear Trim Panel in Cargo Area
Tachometer Wire Negative Wire (-): Brown/White
Tachometer Wire Negative Wire Location: At ECM Module Near Right Front Strut Tower
Wait To Start Wire: N/A
Wait To Start Location: N/A
Brake Light Positive Wire (+): Yellow/Red
Brake Light Positive Wire Location: At Switch Above the Brake Pedal
Factory Alarm Arm Wire (-): Violet/White
Factory Alarm Arm Wire Location: At Driver Door Module in Driver Door
Factory Alarm Disarm Wire (-): Blue/White
Factory Alarm Disarm Wire Location: At Driver Door Module in Driver Door
Factory Anti-Theft System: Key Vehicle Immobilizer
Factory Anti-Theft System Location: Key Sends RF Signal to the BCM Module
The 2008 Volvo XC90 alarm wire color and location information above is updated as it is submitted by the Modified Life community.