Chevrolet  Tahoe 1998-1999
 PART   COLOR  LOCATION
 12 VOLT CONSTANT   RED (+)   @ IGNITION SWITCH HARNESS
 STARTER  YELLOW or PURPLE (+)  @ 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 ( - )  N/A  
 PARKING LIGHTS ( + )  BROWN (+)  @ HEADLIGHT SWITCH
 POWER LOCK  LT. BLUE, SEE NOTE #3  IN DRIVERS DOOR BOOT
 POWER UNLOCK  WHITE, SEE NOTE #3  IN DRIVERS DOOR BOOT
 DOOR TRIGGER  PURPLE (-)  @ HEADLIGHT SWITCH
 DOMELIGHT SUPERVISION  WHITE (-), (Requires #775 Relay)  @ UNDERDASH LIGHT
 TRUNK RELEASE  BLACK or BLACK/WHITE, SEE NOTE #6  LOW IN DRIVERS KICK PANEL
 SLIDING POWER DOOR  N/A  
 HORN  BLACK (-)  @ STEERING COLUMN HARNESS
 TACH  WHITE (AC)  @ ECM, SEE NOTE #4
 WAIT TO START LIGHT  DK. BLUE (-)  @ INSTRUMENT CLUSTER
 BRAKE  WHITE (+)  @ SWITCH ABOVE BRAKE PEDAL
 FACTORY ALARM DISARM   N/A  
 ANTI-THEFT  GM'S PASSLOCK 2 ANTI-THEFT SYSTEM, SEE NOTE #1  
 EXTRA INFORMATION
 NOTE #1: This vehicle is equipped with the PASSLOCK 2 ANTI-THEFT SYSTEM and will require a 791 Bypass Module for Remote Starting, to order go to the SECURITY BYPASS MODULE 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: 4-Door vehicles are a TYPE A Door Locks and 2-door vehicles are TYPE C Door Locks. NOTE #4: The ECM is located on the INNER FENDER. The TACH wire is in a BLACK PLUG marked WHITE. NOTE #5: The tach wire is also a WHITE at the instrument cluster, for DIESEL use a WHITE wire at the ALTERNATOR or INSTRUMENT CLUSTER. NOTE #6: This wire is a (+)Positive on vehicles with a Rear Lift Window and a 5-Wire type on vehicles with a Cargo Door.