Chevrolet  Silverado 1999-2002
 PART   COLOR  LOCATION
 12 VOLT CONSTANT   RED (+)   @ IGNITION SWITCH HARNESS
 STARTER  YELLOW (+)  @ IGNITION SWITCH HARNESS
 STARTER 2  N/A  
 IGNITION 1  PINK (+)  @ IGNITION SWITCH HARNESS
 IGNITION 2  WHITE (+), SEE NOTE #2  @ IGNITION SWITCH HARNESS
 IGNITION 3  N/A  
 ACCESSORY/HEATER BLOWER 1  ORANGE (+)  @ IGNITION SWITCH HARNESS
 ACCESSORY/HEATER BLOWER 2  N/A  
 KEYSENSE  N/A  
 PARKING LIGHTS ( - )  WHITE (-)  @ BCM LT BLUE PLUG, PIN A5, SEE NOTE #3
 PARKING LIGHTS ( + )  BROWN (+)  @ HEADLIGHT SWITCH or BCM, LT BLUE PLUG, SEE NOTE #3
 POWER LOCK  LT. BLUE (TYPE A)  @ BCM BROWN PLUG, SEE NOTE #3
 POWER UNLOCK  WHITE (TYPE A)  @ BCM BROWN PLUG, SEE NOTE #3
 DOOR TRIGGER  SEE NOTE #5  @ BCM, SEE NOTE #3
 DOMELIGHT SUPERVISION  TAN (-)  @ BCM, PURPLE PLUG, PIN B4, SEE NOTE #3
 TRUNK RELEASE  N/A  
 SLIDING POWER DOOR  N/A  
 HORN  BLACK (-)  @ BCM, BROWN PLUG, SEE NOTE #3
 TACH  WHITE (AC)  @ ECM, SEE NOTE #4
 WAIT TO START LIGHT  DK. BLUE (-)  @ INSTRUMENT CLUSTER
 BRAKE  WHITE (+)  @ BRAKE PEDAL SWITCH
 FACTORY ALARM DISARM   LT. GREEN (-)  IN DRIVERS KICK PANEL
 ANTI-THEFT  GM'S PASSLOCK 2 ANTI-THEFT SYSTEM, SEE NOTE #1  @ IGNITION SWITCH
 EXTRA INFORMATION
 NOTE #1: This vehicle uses GM'S PASSLOCK 2 ANTI-THEFT SYSTEM that requires a 791 Bypass Module to Remote Start, to order go to the SECURITY BYPASS MODULES Page on this website. NOTE #2: The IGNITION #2 wire WHITE must be connected to prevent a CHECK ENGINE LIGHT from turning on and to prevent DAMAGE to the TRANSMISSION on this Vehicle. NOTE #3; The BCM is located behind the Drivers Side of the dash, the plugs on the BCM face towards the rear of the vehicle. NOTE #4: The ECM is located NEAR the Battery, low, between the fender and the fan, under a BLACK PLASTIC Cover, on the 4.3L engine the tach wire is @ Pin 20, in the connector labled RED. On the 4.8L, 5.3L and 6.0L engines, the tach wire is @ Pin 10 of the RED Connector. NOTE #5: use TAN (-) for the Drivers door located in PURPLE PLUG, PIN B4, for the PASSENGER door use a ORANGE (-) in the PURPLE PLUG, PIN B2 or a DK BLUE/WHITE (-) in a LT BLUE PLUG, PIN B11, when connecting an alarm you must use both wires and diode isolate.